News
- Earth
Lightning may be an important source of air-cleaning chemicals
Airplane observations show that thunderstorms can directly generate vast quantities of atmosphere-cleansing chemicals called oxidants.
- Ecosystems
Wild donkeys and horses engineer water holes that help other species
Dozens of animals and even some plants in the American Southwest take advantage of water-filled holes dug by these nonnative equids.
- Animals
Mantis shrimp start practicing their punches at just 9 days old
The fastest punches in the animal kingdom probably belong to mantis shrimp, who begin unleashing these attacks just over a week after hatching.
- Physics
A clock’s accuracy may be tied to the entropy it creates
A clock made from a thin, wiggling membrane releases more entropy, or disorder, as it becomes more accurate.
