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Saturday, February 28, 2026 7:56 PM ET

Live Science - Weird

Scientists made AI agents ruder - and they performed better at complex reasoning tasks - By - Drew Turney - published - 28 February 26 - A new project allowed AI chatbots to interrupt, stay silent or speak up the way humans do in conversation, and it made them smarter and more accurate.

8 hours ago

Giant string of organic molecules on Mars may be one of the best signs of life yet - By - Ivan Farkas - published - 28 February 26 - A new NASA analysis concludes that it is "reasonable to hypothesize" that living things could have formed the odd organic molecules discovered on Mars.

9 hours ago

Paleolithic humans invented an 'early predecessor to writing' at least 40,000 years ago, carved signs suggest - By - Kristina Killgrove - published - 28 February 26 - A statistical analysis of a series of signs carved into artifacts from around 40,000 years ago suggests humans developed proto-writing in the Stone Age.

11 hours ago

'Spiderwebs' spotted on Mars as NASA's moon program gets a major shakeup, tigers set to return to Kazakhstan, and why 'monogenic' diseases might not be so simple after all. By - Ben Turner - published - 28 February 26 - Science news this week - Feb. 28, 2026: Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the weekend.

12 hours ago

Inherited diseases don't work like we thought they did - By - Stephanie Pappas - published - 27 February 26 - "Monogenic" diseases, triggered by mutations in just one gene, may actually be more complex than scientists thought.

1 day ago

Humans and Neanderthals interbred - but it was mostly male Neanderthals and female humans who coupled up, study finds - By - Kristina Killgrove - published - 26 February 26 - A preference for pairings between male Neanderthals and female Homo sapiens may answer the question of why there are "Neanderthal deserts" in human chromosomes.

2 days ago

Rubin Observatory alerts scientists to 800,000 changes in the sky in one night - By - Elizabeth Howell - published - 26 February 26 - The Vera C. Rubin Observatory sent scientists nearly 1 million astronomy alerts in one night, showing off changes in the sky. Eventually, the telescope is expected to reach 7 million alerts per night.

2 days ago

Giant 'spiderwebs' on Mars contain tiny egg-like structures that scientists 'can't quite explain,' NASA rover reveals - By - Harry Baker - published - 26 February 26 - New photos captured by NASA's Curiosity rover show that Mars' giant, spiderweb-like "boxwork" features are covered in tiny, never-before-seen nodules that bear a striking resemblance to arachnid eggs. And researchers are struggling to explain them.

2 days ago

Fresh look at Apollo moon rocks solves decades-old lunar mystery - By - Elizabeth Howell - published - 26 February 26 - The lunar rocks collected by Apollo astronauts suggested the moon had a strong magnetic field. A new analysis shows the opposite.

3 days ago