Pterosaurs May Have Had Brightly Colored Feathers, Exquisite Fossil Reveals

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April 20, 2022

Paleontology Pterosaurs May Have Had Brightly Colored Feathers, Exquisite Fossil Reveals An amazingly well-preserved fossil suggests the common ancestor of dinosaurs and pterosaurs also had some type of feather or feather precursor By Riley Black

Geology Backward-Flowing Rivers Can Destabilize Ice Shelves "Estuaries" from the ocean onto the ice can cause fractures and contribute to sea-level rise By Theo Nicitopoulos

Animals AIs Spot Drones with Help from a Fly Eye A new bio-inspired algorithm picks out the signal from the noise By Monique Brouillette

Dark Matter Cosmic Simulation Shows How Dark-Matter-Deficient Galaxies Confront Goliath and Survive A research team finds seven tiny dwarf galaxies stripped of their dark matter that nonetheless persisted despite the theft. By Joanna Thompson | 05:49

Climate Change Antarctic Sea Ice Hit a Record Low, Now Scientists Think They Know Why In February, sea ice dropped below 2 million square kilometers for the first time on record By Chelsea Harvey,E&E News

Anthropology Decades of Photos Reveal Amazon Cultures Under Threat Photographer Sebastião Salgado has spent more than two decades documenting the complex lives of Indigenous Amazonian people as they stand strong in the face of unrelenting colonial forces By Joanna Thompson

Epidemiology How to Make Smart COVID Risk-Benefit Decisions Scientific American asks experts in medicine, risk assessment and other fields how to balance the risks of COVID with the benefits of visiting public indoor spaces By Devabhaktuni Srikrishna

Planetary Science Next Stop, Uranus? Icy Planet Tops Priority List for Next Big NASA Mission An influential panel's recommendation makes the ice giant a likely destination for a flagship space mission By Alexandra Witze,Nature magazine

Public Health Why We Need to Upgrade Our Face Masks--and Where to Get Them High-quality respirators such as N95s and KN95s are now widely available and provide the best protection against COVID, according to experts. Why aren't more people wearing them? By Tanya Lewis

Epidemiology Are New Omicron Subvariants a Threat? How Scientists are Keeping Watch In South Africa, a network of researchers are studying whether new lineages BA.4 and BA.5 escape immunity from COVID-19 vaccines and prior infections By Amy Maxmen,Nature magazine

Politics Russia's War in Ukraine Follow our ongoing coverage of the conflict, from the humanitarian crisis to the global impact on food supply and the catastrophic potential of nuclear weapons

FROM THE STORE Scientific American Volume 326, Issue 5

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FROM THE ARCHIVE Pterosaur Origins Flap into Focus Fossils of small, delicate animals may reveal the early history of gigantic flying reptiles By Riley Black | December 2020

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