Posted by beesbees

When Unemployment Became a Political Tool A former Thatcher adviser describes a recurring political logic: unemployment as a feature, not a bug.

Clip from Shifty (2025) by Adam Curtis. Alan Budd reflects on the possibility that economic policies presented as technical necessities can also function to weaken labour, reshape class power, and restore profitability. Although grounded in 1980s Britain, the mechanism he describes—crisis, discipline, unemployment—has reappeared many times since, and continues to surface in contemporary economic policy debates.
thewayne: (Default)
https://qr.ae/pCZEPA

Question: How many Democrats are pro-Maduro?
Reply: Zero.

Back in my uni days, I took a class in cognitive science that was one of my favorite courses. One of the many, many things we talked about in class was the difference between abstract thinkers and concrete thinkers.

This difference appears to be architectural, a consequence of how your brain is wired, not a matter of choice or education.

Concrete thinkers see the world in strict black and white terms. They have difficulty drawing indirect connections between things, struggle to see multiple perspectives, and tend to hold an all or nothing, with-us-or-against-us mentality.

Abstract thinkers understand complex associations, can understand multiple perspectives at the same time, and can see second and third order relationships between things.

And crucially, abstract thinkers can understand concrete thought patterns, but generally speaking, concrete thinkers seem physically incapable of understanding abstract thought patterns.

So here’s the thing:

Abstract thinkers are capable of grasping multiple ideas at once. Like, “Maduro is an illegitimate totalitarian ruler with an authoritarian bent who presided over an illegitimate government” and also “a unilateral move to depose Maduro is illegal under international treaties and morally wrong.”

Concrete thinkers be all like “you’re either good or your bad, and if you’re bad you deserve anything bad that happens to you, anyone who says Maduro shouldn’t have been kidnapped must live and support Maduro.”

Abstract thinkers be like “no, you can believe a person is bad and also believe that breaking the law to kidnap that person is bad too, both of those things can be true at the same time.”


Very interesting, I wish we had classes available here on such a topic. I'm not sure how much I agree with it being a structural thing vs an education thing, I'd want to see some information on that, I'd be open to discussion.

I can certainly see where some conservative people whom I know/knew had problems with abstract thinking. I think I would hazard to say that concrete thinkers might be more easily persuaded by ideologues since they would be more likely to present their arguments and ideas in more concrete 'for or against' terms with straw man arguments that appear harder to refute.

Personally I've never had problems to easily see and argue multiple sides of an argument. When I first started working here at the university, around 20 years ago in the computer lab, we had one guy who had a degree in philosophy, and we had a security guard who was an ex-cop and a former preacher, and another who just liked discussing things in a lively fashion. And we had these informal round tables where we'd argue the issues of the day, going around and round, picking up and discarding different viewpoints. It was tremendous fun. But it only lasted about a year before I left and the group broke apart.

I know I definitely prefer to associate more with abstract thinkers, they're much more fun to talk and argue (more in a discuss way, not combative ) things with.
lannamichaels: Astronaut Dale Gardner holds up For Sale sign after EVA. (Default)


Title: Caryatid.
Author: [personal profile] lannamichaels
Fandom: Wake Up Dead Man (2025)
Series: Part 2 of Pillar Of The Community
Rating: G
Archives: Archive Of Our Own, SquidgeWorld

Summary: "How did you know?" Jud asks Blanc.


Coda )

Posted by AlSweigart

GoFundMe is allowing a fundraising campaign tied to the potential legal defense of an Immigration and Customs Enforcement (ICE) agent who fatally shot a civilian to remain online, despite company rules barring fundraisers connected to violent crimes and past enforcement actions against similar campaigns.
lannamichaels: Brachos 2a, caption: "There's a debate about that" (daf yomi)



After spending large parts of December getting behind and catching up and getting behind and catching up... I finished Zevachim two days early. The power of bamos! ;) On to Menachos!

My notes behind cut.

We're also about a year and a half out from the end of this cycle, which means I have already gotten one gentle "hey, do you know where you'll be on June 7, 2027"-type email from an org. No, I do not think this is too early, actually. Gotta make plans. Deeply hoping I can avoid being involved in organizing the in person thing here, but I have a suspicion that if I'm not involved, it may end up as unwelcoming as the women's siyum hashas I went to at the end of the last cycle. (I do trust a couple of the people likely to attend it, but I don't know who is going to be organizing anything here. So I may need to try to get involved against my will.) It wasn't actually that bad overall -- aside from how it's still, y'know, memorable 6 years removed from it -- but I am quite frankly more willing to get into an airplane and fly to a different city than go through that again. (okay more realistically if it ends up organized by a group I do not trust at all, I'd zoom in to a larger event and be done with it)

Read more... )

Posted by Bella Donna

America's problems are solved problems. Universal healthcare is not some utopian fantasy. It is Tuesday in Toronto. Affordable higher education is not an impossible dream. It is Wednesday in Berlin. Sensible gun regulation is not a violation of natural law. It is Thursday in London. Paid parental leave is not radical. It is Friday in Tallinn, and Monday in Tokyo, and every day in between. There is another America inside this one, visible in the statistics of nations that made different choices. Call it Latent America: the nation that would exist if our democracy functioned to serve the public rather than protect the already powerful. In his newsletter On Data and Democracy, Adam Bonica writes about the Berlin Wall and the optimism of preparation in a time of democratic decay.

...I know how this moment feels. I watch the dismantling too—the corruption displayed without shame, the institutions hollowed from within, the coordinated campaigns of cruelty and dehumanization. It is easy to believe we are watching an ending. ...The regime dismantling our institutions does not command majority support. It never has. Trump's approval ratings have remained underwater throughout his presidency. The policies being enacted poll badly, often catastrophically. This is not a popular revolution. It is a minoritarian project exploiting a counter-majoritarian system—and regimes built that way are inherently unstable. (Don't miss the Cost of American Exceptionalism table, which shows how life would improve for Americans if the U.S. matched the other countries in the Organization for Economic Cooperation and Development.) ...My deepest fear is not that we fail to survive this moment—it's that we survive it only to return to the status quo that made it possible. That we exhale, declare victory, and leave in place the Electoral College, the filibuster, the gerrymandered maps, the money-soaked elections that allowed a minoritarian movement to capture the state in the first place. The point is not to get back to normal. Normal is how we got here. ...Despair makes sense when nothing can be done. We know exactly what can be done. We can see it working.

(no subject)

Jan. 12th, 2026 12:30 pm[personal profile] greghousesgf
greghousesgf: (pic#17096877)
Dinner last night was great, I had spaghetti and clams at LoCoco's with a couple of glasses of this great wine and bread and a cannoli.

Call for Themes

Jan. 12th, 2026 01:50 pm[personal profile] ysabetwordsmith posting in [community profile] crowdfunding
ysabetwordsmith: Cartoon of me in Wordsmith persona (Default)
We've reached the end of scheduled themes for the Poetry Fishbowl project. It's time to brainstorm some new themes! If you have ideas, comment under the theme call post in my blog.

Posted by rambling wanderlust

The Enshittifinancial Crisis (wheresyoured.at) A very long and detailed look at the current state of the fusion of the tech and financial worlds, by Edward Zitron, previously: "The Rot Economy." Featuring enshittification, AI, the metaverse, venture capital, private equity, data centers, NVIDIA, magical disappearing deals and plenty of questionable spending and staggeringly large and small numbers.

We are watching one of the greatest wastes of money in history, all as people are told that there "just isn't the money" to build things like housing, or provide Americans with universal healthcare, or better schools, or create the means for the average person to accumulate wealth. The money does exist, it just exists for those who want to gamble — private equity firms, "business development companies" that exist to give money to other companies, venture capitalists, and banks that are getting desperate and need an overnight shot of capital from the Federal Reserve's Overnight Repurchase Facility or Discount Window, two worrying indicators of bank stress... ... By letting neoliberalism and the scourge of the free markets rule, modern society created the conditions for what I call The Enshittifinancial Crisis — the place at which my friend Cory Doctorow's Enshittification Theory meets my own Rot Economy Thesis in a fourth stage of Enshittification.

Posted by mittens

'I want to examine the inherent enmity between socialism and fascism, where it comes from, and why. Obviously, I don't mean to suggest that socialists are the only, or even the primary victims of fascist evil: millions of queer, disabled, Jewish, Roma, and other groups were also brutally trampled by the fascist jackboot. Still, as Martin Niemöller's famous poem goes, "First they came for the communists," and if we want to understand and combat fascism today, it's vital to know why that is.' Matt McManus in Current Affairs, Why Fascists Always Come for the Socialists First.
loganberrybunny: Drawing of my lapine character's face by Eliki (Default)
Public

This really shouldn't be the case but as far as I can tell, I am in at least the top 5% (maybe even considerably smaller than that) of people regarding knowledge of what went on during the production of The Last House on the Left. I have achieved this not through formal expertise or through special access, but by merely:

1) Going through the DVD/Blu-ray extras systematically
2) Reading all of David Szulkin's making-of book
3) Spending more than three minutes searching for evidence

Given Last House was the film that launched Wes Craven's career in horror, it is absolutely absurd how useless the horror and cinema media have been, for decades, in interrogating what happened away from the fictional story. Wes Craven himself should have been asked far more searching questions than he was.

This criticism applies to cinema academics too. It's deeply ironic, in a bad way, that there have been so many people writing papers and articles about the way Mari is portrayed in the story from various progressive and feminist viewpoints, yet almost none writing about the serious abuse by men of the real young woman who played Mari.

The fact that the most likely place to find details of what Sandra Peabody endured is in listicles is a terrible indictment of how badly so-called "serious" horror and cinema media have failed.

Spring Flowers

Jan. 12th, 2026 05:14 pm[personal profile] bookscorpion posting in [community profile] common_nature
bookscorpion: This is Chelifer cancroides, a book scorpion. Not a real scorpion, but an arachnid called a pseudoscorpion for obvious reasons. (Default)
I buy primroses and pots full of bulbs as soon as they are available, it does so much for my mood to have them where I can see them from the couch. I have daffodils, grape hyacinths, a couple of different hyacinths and these netted irises.

Posted by Michala Garrison

Two thick plumes of gray wildfire smoke spread from Patagonia's forested, snow-capped mountains in the middle of the scene into Argentina's brown, drier plains to the right.
January 8, 2026

Summer is usually peak tourism season in Argentina’s Chubut province, a time when hikers and sightseers arrive to explore glacial lakes and cirques, alpine valleys, and towering forests. In January 2026, however, some visitors to the remote Patagonian region instead found themselves fleeing raging wildland fires.

On January 8, 2026, the MODIS (Moderate Resolution Imaging Spectroradiometer) on NASA’s Aqua satellite captured this image of smoke billowing from two large fires burning in and around Los Alerces National Park, a UNESCO World Heritage site. NASA satellites began detecting widespread fire activity in the area on January 6.

The more southerly blaze was spreading east on ridges between Lago Rivadavia, Lago Futalaufquen, and Lago Menéndez; the more northerly fire was burning on steep hillsides around Lago Epuyén. All of the lakes occupy U-shaped glacial troughs, valleys with unusually flat bases and steep sides carved by glacial and periglacial erosion. Satellite-based estimates from the Global Wildfire Information System indicate that fires charred more than 175 square kilometers (67 square miles) across Patagonia between January 5 and 8.

The ridges are blanketed with temperate Patagonian Andean forest, including sections of Valdivian rainforest, with rare stands of alerce (Fitzroya cupressoides). A type of cypress, these huge, slow-growing conifers are the second-longest-lived trees on Earth, with some surviving for more than 3,600 years. According to UNESCO documents, Los Alerces National Park protects 36 percent of Argentina’s alerce forests, including stands with the greatest genetic variability on the eastern slopes of the Andes. The park’s forests also contain exclusive genetic variants and the oldest individuals in the country.

News outlets and the national park reported challenging weather conditions for firefighters on the ground, who faced high temperatures, low humidity, and strong winds in recent days. Standardized Precipitation Index data from the National Integrated Drought Information System show that unusually dry conditions over the past several months have likely primed vegetation to burn. News outlets reported that at least 3,000 tourists had to be evacuated from a lake resort near Lago Epuyén.

NASA Earth Observatory image by Michala Garrison, using MODIS data from NASA EOSDIS LANCE and GIBS/Worldview. Story by Adam Voiland.

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Posted by ldauphin

A satellite image of the Ganges Delta shows a T-shaped area of low white clouds. At the bottom, clouds extend over the blue waters of the Bay of Bengal in parallel rows.
January 6, 2026

Winter weather took hold across the Indo-Gangetic Plain in early January 2026, bringing dense fog and cold temperatures to much of the flat, fertile lands that span from Pakistan and northern India to Bangladesh.

This image shows low-lying clouds over the delta on the morning of January 6, captured by the MODIS (Moderate Resolution Imaging Spectroradiometer) on NASA’s Terra satellite. Dense fog, particularly radiation fog, is common this time of year, forming when ground temperatures are cool, winds are light, and moisture is abundant near the surface. The meteorological departments of both Bangladesh and India called for moderate to very dense fog over the region that day amid an ongoing cold wave.

Other relatively low-level clouds extend from the land areas and over the Bay of Bengal. These long, parallel bands of clouds, known as cloud streets, can form when cold air passes over warmer open water, gaining heat and moisture. Rising thermals ascend until they reach a temperature inversion that acts like a lid, forcing the air to roll into long, parallel rotating cylinders. Clouds develop where the air rises, while clear skies appear where the air sinks.

While it appears scenic from above, foggy conditions can pose hazards and snarl daily life for people on the ground. For instance, dense fog early in the month caused major disruptions at the international airport in Dhaka, according to local news reports. Similar disruptions, along with travel delays on roads and railways, were reported in parts of northern, central, and eastern India.

NASA Earth Observatory image by Lauren Dauphin, using MODIS data from NASA EOSDIS LANCE and GIBS/Worldview. Story by Kathryn Hansen.

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Posted by Michala Garrison

A satellite image captured on December 26, 2025, centers on iceberg A-23A adrift in dark Southern Ocean waters. The iceberg appears as a bright white, roughly rectangular slab with jagged edges and parallel blue stripes across its surface. The blue areas are meltwater ponds. A thick patch of ice fragments known as brash ice is visible along one edge of the main iceberg in an area where meltwater is leaking from it, while patches of small icebergs and clouds are also visible around it.
December 26, 2025

The year that iceberg A-23A first broke away from Antarctica’s Filchner Ice Shelf, Ronald Reagan was president of the United States, and the movie Top Gun was setting box office records. Forty years later, the massive tabular berg—one of the largest and longest-lived bergs ever tracked by scientists—is sopping with blue meltwater and on the verge of complete disintegration as it drifts in the South Atlantic between the eastern tip of South America and South Georgia island.

When it first detached from Antarctica in 1986, the berg was nearly twice the size of Rhode Island—about 4,000 square kilometers. Estimates from the U.S. National Ice Center put the berg’s area at 1,182 square kilometers (456 square miles) in early January 2026, following the breakup of several sizable pieces in July, August, and September of 2025 as it moved into relatively warm summer conditions by December.

When the MODIS (Moderate Resolution Imaging Spectroradiometer) on NASA’s Terra satellite captured this image of what remained of the waterlogged berg on December 26, 2025, extensive pools of blue meltwater were visible on its surface. Though much smaller than it once was, what remains is still among the largest icebergs in the ocean, covering an area larger than New York City. An astronaut aboard the International Space Station captured a photograph showing a closer view (below) of the iceberg a day later, with an even more extensive melt pool.

The “blue-mush” areas are likely the result of ongoing disintegration events, explained Ted Scambos, a senior research scientist at the University of Colorado Boulder. “You have the weight of the water sitting inside cracks in the ice and forcing them open,” he said. Note also the thin white line around the outer edge of the iceberg seemingly holding in blue meltwater—a “rampart-moat” pattern caused by an upward bending of the iceberg plate as its edges melt at the waterline.

A photograph taken by an astronaut aboard the International Space Station on December 27, 2025, shows a closer view of the iceberg. Striking blue melt ponds cover nearly the surface top of A-23A except for a thin boundary of white along the edge—an area where the ice has warped upward. Wispy clouds run diagonally across the image, partially obscuring the view.
December 27, 2025

The striking linear patterns of blue and white across the berg are likely related to striations that were scoured hundreds of years ago when the ice was part of a glacier dragging across Antarctic bedrock.

“The striations formed parallel to the direction of flow, which ultimately created subtle ridges and valleys on the top of the iceberg that now direct the flow of meltwater,” explained Walt Meier, a senior research scientist at the National Snow & Ice Data Center. “It’s impressive that these striations still show up after so much time has passed, massive amounts of snow have fallen, and a great deal of melting has occurred from below,” added retired University of Maryland Baltimore County scientist Chris Shuman.

The MODIS image suggests that the ailing iceberg has also sprung a leak. The white area to its left may be the result of what Shuman described as a “blowout.” The weight of the water pooling at the top of the towering iceberg would have created enough pressure at the edges to punch through. The blowout may have allowed meltwater to spill tens of meters down to the ocean surface in what researchers call a “freshwater discharge plume,” where it mixed with the mélange of ice bits floating next to the iceberg.

Scientists say these signs indicate the iceberg could be just days or weeks from disintegrating completely. “I certainly don’t expect A-23A to last through the austral summer,” said Shuman, noting that the season typically brings clearer skies and warmer air and water temperatures—factors that accelerate the disintegration process in an area known among ice experts as a “graveyard” for icebergs. It’s already in water that’s about 3 degrees Celsius and riding currents that are pushing it toward even warmer waters that will eat away at it quickly, added Meier.

Even by Antarctic standards, A-23A has had a long, winding journey full of unexpected chapters that have improved scientists’ understanding of the “megabergs” occasionally released into the Southern Ocean. After grounding in the shallow waters of the Weddell Sea for more than 30 years, A-23A broke free in 2020, then spent several months in a twirling ocean vortex called a Taylor column. It eventually spun away and headed north, nearly colliding with South Georgia island and lodging in shallow waters for several months before escaping into the open ocean, where it has been rapidly breaking apart throughout 2025.

Scientists who have been tracking the berg for their entire careers see its imminent demise as a bittersweet moment. “I’m incredibly grateful that we’ve had the satellite resources in place that have allowed us to track it and document its evolution so closely,” said Shuman. “A-23A faces the same fate as other Antarctic bergs, but its path has been remarkably long and eventful. It’s hard to believe it won’t be with us much longer.”

Even as A-23A fades, other massive bergs are parked or drifting along the Antarctic shoreline. Several, including A-81, B22A, and D15A, are each larger than 1,500 square kilometers and sit waiting for their moment to break free and begin their journey north.

NASA Earth Observatory image by Michala Garrison, using MODIS data from NASA EOSDIS LANCE and GIBS/Worldview. ISS Astronaut photograph ISS074-E-8943 was acquired on December 27, 2025, with a Nikon Z 9 digital camera using a focal length of 500 millimeters. It is provided by the ISS Crew Earth Observations Facility and the Earth Science and Remote Sensing Unit at NASA Johnson Space Center. The image was taken by a member of the Expedition 74 crew. The image has been cropped and enhanced to improve contrast, and lens artifacts have been removed. The International Space Station Program supports the laboratory as part of the ISS National Lab to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth. Story by Adam Voiland.

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Posted by ldauphin

June 2022-July 2023

On clear days in Hartbeespoort, South Africa, satellite images often reveal a reservoir with shades of deep blue interrupted by drifting patches of vivid green. Over the years, these shifting features have included algae blooms—which can affect water quality, ecosystems, and nearby human communities—along with several types of invasive aquatic plants.

In this animation, from June 2022 to July 2023, aquatic plants proliferate, move around the reservoir, and then fade. The animation is composed of images from Harmonized Landsat and Sentinel-2 (HLS), a NASA product that combines imagery from the NASA/USGS Landsat 8 and Landsat 9 satellites and the European Space Agency’s Sentinel-2A, 2B, and 2C satellites.

The green masses can also contain varying amounts of algae, an umbrella term for photosynthetic organisms that live in water, encompassing everything from single-celled cyanobacteria to seaweed. They play a vital role in maintaining healthy ecosystems. But when colonies of algae spread too widely or release harmful toxins, they can threaten the very environments they support. These colonies are known as harmful algal blooms, or HABs.

Some HABs are toxic and often are part of a process called eutrophication. Eutrophication begins when there are too many nutrients in an ecosystem—because of agricultural runoff and other inputs—leading to a rapid growth of algae.

“It’s like having a garden,” said Bridget Seegers, a NASA scientist who studies cyanobacteria in freshwater ecosystems. “If you add a lot of nutrients, you’re going to have a lot of growth.”

Eventually, the algae die off. As decomposers break down the dead algae, they consume oxygen, which can lead to hypoxia and the formation of dead zones.

A satellite image of a mostly brown landscape features a dark-blue reservoir partially covered by bright green algae in the north and center.
August 10, 2022

Such conditions have been documented at the Hartbeespoortdam (Hartbeespoort Dam) reservoir, located about 25 kilometers (16 miles) west of Pretoria and used primarily for recreation and irrigation. It also hosts large mats of invasive water hyacinths and, more recently, the invasive plant Salvinia minima. While these aquatic plants do not produce toxins, they do contribute to eutrophication when they die and decompose.

Harmful algal blooms can affect ecosystem health and human lives and livelihoods. In April 2023, South African authorities linked a large fish kill in Hartbeespoort to low oxygen levels caused by excessive algal growth. More broadly, HABs in drinking water reservoirs can reduce water availability and raise water treatment costs, while swimming in HAB-infested waters can cause rashes, and pets or livestock that drink it may fall ill or die.

One 2022 paper published in Remote Sensing examined algae in the reservoir from 1980 to 2020 using Landsat data. “This is a reservoir that has always been monitored heavily by the local department of water resources,” said Adam Ali, the lead author of the paper. The research used satellite data to provide a big-picture view of conditions across the entire reservoir over long time scales. Using 40 years of Landsat data, the researchers found that the biggest drivers of algal growth were total phosphorus content—a nutrient found in runoff—and water temperature, with blooms typically expanding in the warm summer months and subsiding in the winter.

They also identified key trends over space and time. Algal productivity was higher near Krokodilrivier (Crocodile River) inflows and in the western part of the reservoir due to golf course runoff and restricted water circulation, demonstrating how HABs are influenced by runoff and river inputs. Large blooms occurred between 1982 and 1986, when total phosphorus levels were high. A bioremediation program in the late 1980s succeeded in limiting algae growth, but after funding ended in the late 1990s, harmful algal blooms spiked again in the early 2000s.

To track algae from space, the researchers analyzed the water’s color by measuring different wavelengths of light. From this, they estimated the concentration of chlorophyll-a, a common pigment in algae, and used these values to approximate algae biomass over time. Although water samples remain necessary to confirm that a bloom is harmful, satellite data can help scientists understand the drivers of harmful algal blooms, especially in remote regions where regular ground monitoring is expensive and time intensive.

New and forthcoming NASA missions promise to advance space-based water quality monitoring. The next Landsat satellite is expected to measure wavelengths specifically designed to detect HABs. NASA’s PACE (Plankton, Aerosol, Cloud, ocean Ecosystem) mission, launched in 2024, collects data in hundreds of precise wavelength bands in the visible spectrum, which can help scientists identify the type of algae that comprise a certain bloom—a key factor in determining toxicity. Given PACE’s spatial resolution, the data is most useful in coastal areas or larger inland water bodies. Ali is working with researchers at NASA Ames to integrate PACE into future studies.

Editor’s note: This story was updated on January 13, 2026, to note the presence of the plant Salvinia minima.

Animation by Ross Walter/Landsat Science Office Support, using data from the Harmonized Landsat and Sentinel-2 (HLS) product. HLS is funded by NASA and is a deliverable of the Satellite Needs Working Group (SNWG), an interagency effort of the U.S. Government dedicated to identifying and addressing Earth observation needs across U.S. civilian federal agencies. Still image by Lauren Dauphin/NASA Earth Observatory using Landsat data from the U.S. Geological Survey. Story by Madeleine Gregory/Landsat Science Office Support.

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Posted by ldauphin

This satellite image centers on the serrated edge of the Huila plateau in Angola. The sheer cliff wall forms a rough C shape and is highlighted by dark shadows and a band of green vegetation. The lowlands to the left are tan-colored arid coastal plains, and the more-temperate plateau on the right side is greener.
June 19-20, 2025

In southwestern Angola, an expanse of coastal plains comes to an abrupt end at a natural barrier. The Huíla plateau soars above the lowlands to elevations of around 2,300 meters (7,500 feet). The sharp transition results in dramatic landscapes and a sudden change from an arid environment to more-temperate climes.  

The serrated edge of the Huíla plateau zigzags through this image, which is a mosaic of scenes acquired on June 19 and 20, 2025, with the OLI-2 (Operational Land Imager-2) and OLI on the Landsat 9 and Landsat 8 satellites, respectively. Areas around the plateau’s edges appear green with vegetation. But the landscape tends to look much browner by late September, at the end of the region’s dry season, during which almost no rain falls.  

This topography is part of the Great Escarpment of southern Africa, a 5,000-kilometer-long feature running roughly parallel to the continent’s edge. From Angola, it extends south through Namibia, across South Africa, and then northeast into Zimbabwe and Mozambique. The image below, acquired with the VIIRS (Visible Infrared Imaging Radiometer Suite) on the Suomi NPP satellite, shows a longer segment of the escarpment in Angola.  

A satellite image of southwestern Angola shows light-colored coastal desert to the left and a darker plateau to the right. These are separated by a jagged boundary tinged with green, part of the Great Escarpment of southern Africa. The Atlantic Ocean, mostly cloud-covered, runs along the left edge of the image.
June 20, 2025

Scientists believe the escarpment formed after the breakup of the supercontinent Gondwana in the Jurassic period. Since then, erosion has worn away at the continental margin such that the escarpment now sits 50 to 200 kilometers (30 to 120 miles) back from the coast.   

This Angolan section of the escarpment features dizzying, yet beautiful, landscapes. Tundavala Gap, a gouge eroded into the cliff line (below), is one of the most iconic with its well-framed view of the plains below. The precipice also presents a substantial obstacle to transportation. A stretch of the Namibe-Lubango Road overcomes this challenge with a series of scenic hairpin turns climbing to Serra da Leba pass near the town of Leba.  

Sheer cliff walls on the right and left sides of this photograph make a V shape in the foreground. Some light green shrubs grow from cracks in the rock. The ground visible in the opening between the cliffs is far below.
March 11, 2014

Lubango, one of Angola’s largest cities, occupies a valley on the Huíla plateau. In addition to its remarkable natural surroundings, the city boasts a diverse mix of cultures, striking architecture, and a wide variety of locally produced foods.  

NASA Earth Observatory images by Wanmei Liang, using Landsat data from the U.S. Geological Survey, and VIIRS data from NASA EOSDIS LANCEGIBS/Worldview, the Suomi National Polar-orbiting Partnership, and the Joint Polar Satellite System (JPSS). Photo of Tundavala Gap © jbdodane.com. Story by Lindsey Doermann. 

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The post Reaching the Precipice in Angola  appeared first on NASA Science.

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