What to know about the winter solstice, 2024's shortest day
Why fish, birds and other animals yawn too, according to an expert
Americans coexisted with 4-ton sloths for millennia, research shows
"Murder hornets" eradicated in the U.S., agriculture officials say
Coal use hitting record in 2024, which is likely hottest year yet, report says
Bronze-Age Britons were cannibalized after massacre, research shows
Wisdom, the world's oldest-known wild bird, lays an egg at 74
NASA shows off image of U.S. military's abandoned "city under the ice"
