The DESI project previously reported that dark energy — long thought to be constant — changes over time. A new analysis reaffirms that claim.
Mineral crystals in heart cockles’ shells protect symbiotic algae from ultraviolet rays and could lead to innovations in internet infrastructure.
If confirmed as head of the Department of Health and Human Services, Kennedy could influence U.S. policy on vaccines, drugs and food safety.
In 2024, tobacco use among middle and high school students reached a record low, but new vapes and other products with nicotine keep coming.