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3,585 results
3,585 results for: assessments
- Archaeology
Neandertals invented bone-tipped spears all on their own
An 80,000-year-old bone point found in Eastern Europe challenges the idea that migrating Homo sapiens gave the technology to Neandertals.
- Planetary Science
NASA seems to be backing away from hunting for life on Mars
Viking 1 kicked off the search for Martian life 50 years ago. Now NASA’s shifting priorities are putting the quest in limbo.
- Health & Medicine
Avoidable deaths increased in the U.S. as they dropped elsewhere
In the United States, deaths that could have been avoided rose, on average, from 2009 to 2019. That’s in contrast to European Union countries.
- Animals
As bird flu evolves, keeping it out of farm flocks is getting harder
New versions of the H5N1 virus are increasingly adept at spreading. Suggestions to either let it rip in poultry or vaccinate the birds could backfire.
- Earth
Earth’s oldest rocks may be at least 4.16 billion years old
If the new age of these Canadian rocks is solid, they would be the first and only ones known to have survived Earth’s earliest, tumultuous time.
- Microbes
How warming is shifting microbial worlds
Climate change is affecting microbes, and that has implications for all life on Earth.
- Animals
Cool water could protect sea stars from a mysterious disease
Sunflower sea stars discovered taking refuge in fjords may offer clues to saving the critically endangered species from sea star wasting disease.
- Artificial Intelligence
Spotting climate misinformation with AI requires expertly trained models
When classifying climate misinformation, general-purpose large language models lag behind models trained on expert-curated climate data.
- Earth
3 things to know about the deadly Myanmar earthquake
The magnitude 7.7 earthquake was powerful, shallow and in a heavily populated region with vulnerable buildings.
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Megadroughts are on the rise worldwide
One of the most extreme megadroughts has helped fuel wildfires in Los Angeles County and elsewhere in California.
- Artificial Intelligence
Have we entered a new age of AI-enabled scientific discovery?
Some say we’ve entered a new age of AI-enabled scientific discovery. But human insight and creativity still can’t be automated.
- Physics
Calls to restart nuclear weapons tests stir dismay and debate among scientists
Many scientists say “subcritical” experiments and computer simulations make nuclear weapons testing unnecessary.
