A popular climate theory suggested that melting Antarctic glaciers would release iron into the ocean, sparking algae blooms that pull carbon dioxide from the air. New field data from West Antarctica reveal that meltwater provides far less iron than scientists once believed. Instead, most of the iron comes from deep ocean water and sediments, not from the melting ice itself. The discovery raises new questions about how Antarctica influences climate change.

• ScienceDaily
• 3 gün, 2 saat, 52 dakika

Sponges may be ancient, but their timeline has been murky. New research suggests the earliest sponges were soft and skeleton-free, explaining why their fossils don’t appear until much later. By analyzing hundreds of genes and modeling how skeletons evolved, scientists found that mineralized spicules arose separately in different sponge lineages. The discovery rewrites the story of how the first reef-building animals—and possibly the first animals of all—emerged.

• ScienceDaily
• 3 gün, 3 saat, 1 dakika

Scientists have uncovered a surprising new way that giant embryonic cells divide—without relying on the classic “purse-string” ring long thought essential for splitting a cell in two. Studying zebrafish embryos, researchers found that instead of forming a fully closed contractile ring, cells use a clever “mechanical ratchet” system.

• ScienceDaily
• 3 gün, 3 saat, 17 dakika

Drug-resistant bacteria are becoming harder to treat, pushing scientists to look for new antibiotic targets. Researchers have now discovered that several unrelated viruses disable a key bacterial protein called MurJ, which is essential for building the bacterial cell wall. High-resolution imaging shows these viral proteins lock MurJ into a single position, stopping cell wall construction and leading to bacterial death.

• ScienceDaily
• 3 gün, 3 saat, 31 dakika

Scientists at Texas A&M are turning an everyday pick-me-up into a high-tech medical switch. By combining caffeine with CRISPR gene editing, researchers have created a system that allows cells to be programmed in advance — and then activated simply by consuming a small dose of caffeine from coffee, chocolate, or soda. The approach, known as chemogenetics, lets scientists precisely turn gene-editing activity on and off inside targeted cells, including powerful immune T cells that can fight cancer.

• ScienceDaily
• 3 gün, 3 saat, 48 dakika

Looking for a sky event this week? Check out our full Sky This Week column.  February 27: The Moon and Jupiter meet up in Gemini The well-known star Betelgeuse is Orion the Hunter’s alpha star. Shining at magnitude 0.5, this aging sun lies roughly 500 to 600 light-years away. It’s also one of the best candidates for Continue reading "The Sky Today on Saturday, February 28: Orion stands tall" The post The Sky Today on Saturday, February 28: Orion stands tall appeared first on Astronomy Magazine .

• Astronomy Magazine
• 3 gün, 3 saat, 51 dakika

Scientists racing to tackle plastic pollution have created a surprising new contender: a biodegradable packaging film made partly from milk protein. Researchers at Flinders University blended calcium caseinate with starch and natural nanoclay to form a thin, durable material designed to mimic everyday plastic. In soil tests, the film fully broke down in about 13 weeks, pointing to a realistic alternative for single-use food packaging.

• ScienceDaily
• 3 gün, 4 saat, 28 dakika

The updated strategy should mean areas like Strangford Lough will be better protected in five years' time.

• BBC Science News
• 3 gün, 5 saat, 51 dakika

America’s journey back to the moon has run into a few missteps. NASA administrator Jared Isaacman is banking on a new approach.

• WIRED Science
• 3 gün, 9 saat, 42 dakika

Scientists at UC Berkeley have discovered a microbe that bends one of biology’s most sacred rules. Instead of treating a specific three-letter DNA code as a clear “stop” signal, this methane-producing archaeon sometimes reads it as a green light—adding an unusual amino acid and continuing to build the protein. The result is a kind of genetic coin flip: two different proteins can emerge from the same code, influenced partly by environmental conditions.

• ScienceDaily
• 3 gün, 11 saat, 4 dakika

Learn how a combination of archaeology and anthropology helped reveal hidden insights into the diet and culture of prehistoric Europeans.

• Discover Magazine
• 3 gün, 13 saat, 18 dakika

Learn how dogs, cats, and toddlers were tested for spontaneous helping behavior — and why evolution may explain why most dogs tried to help while cats rarely did.

• Discover Magazine
• 3 gün, 13 saat, 21 dakika

Two Falcon 9 launches from Florida and one from California deployed 83 Starlink satellites into low Earth orbit, wrapping up February 2026 for the SpaceX network.

• SPACE.com
• 3 gün, 13 saat, 24 dakika

Learn how brown recluse spiders in Florida are localized, reluctant to bite, and far less likely to cause severe necrotic wounds than commonly believed.

• Discover Magazine
• 3 gün, 13 saat, 36 dakika

Learn about the latest image of comet 3I/ATLAS, captured by a European Space Agency spacecraft that's on its way to Jupiter.

• Discover Magazine
• 3 gün, 13 saat, 51 dakika

A new method of studying the contents of soil samples has revealed Stone Age people in Sweden were buried in decorated fur-and-feather clothing.

• Live Science
• 3 gün, 14 saat, 17 dakika