The UN nuclear chief warned Thursday that "very alarming" military activity at Europe's largest nuclear plant in southeastern Ukraine could lead to dangerous consequences for the region and called for an end to combat actions there.
The top U.S. public health agency on Thursday relaxed its COVID-19 guidelines, dropping the recommendation that Americans quarantine themselves if they come into close contact with an infected person.
Polio, a potentially disabling virus that’s long been forgotten in many parts of the world, is now circulating in parts of the U.S. and U.K., on the heels of an outbreak in Israel. Medical experts say it’s a wake-up call that the virus still poses a threat to anyone who remains unvaccinated.
