News
- Animals
Some snakes lack the ‘hunger hormone.’ Experts are hungry to know why
The complex biology of ghrelin, the hunger hormone, has researchers wondering how its absence helps snakes last a long time with no food, if at all.
- Artificial Intelligence
Real-world medical questions stump AI chatbots
Subtle shifts in how users described symptoms to AI chatbots led to dramatically different, sometimes dangerous medical advice.
- Oceans
Evolution didn’t wait long after the dinosaurs died
New plankton arrived just a few millennia — maybe even decades — after the Chicxulub asteroid, forcing a rethink of evolution's catastrophe response speed.
- Animals
A sea turtle boom may be hiding a population collapse
In Cape Verde, conservation has boosted the sea turtle population 100-fold — but the male-female balance is way off.
