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The 2024 winter solstice, the shortest day of the year, happens on Saturday, Dec. 21, and is marked with traditions and celebrations around the world.

Humans aren't alone when it comes to yawning -- all vertebrates do it. But why? An expert explains the likely reason behind this "evolutionarily ancient" act.

Early Americans may have spent millennia sharing prehistoric savannas and wetlands with enormous beasts, research shows.

Giant hornets, dubbed "murder hornets," have been eradicated in the U.S., five years after the invasive species was first detected in Washington state.

World coal use is set to reach an all-time high in 2024, the International Energy Agency says, in a year all but certain to be the hottest in recorded history.

Researchers determined that dozens of men, women and children were violently killed and cannibalized in Bronze Age-era England.

Wisdom the Laysan albatross was first tagged by researchers in 1956. Since then, she's believed to have raised as many as 30 chicks.

Scientists now have a clearer picture of Camp Century, an abandoned U.S. military base long hidden under the ice in Greenland, thanks to a NASA research team's good luck.

Forensic pathologists hope advanced DNA testing technology will enable them to attach names to all the unidentified people at the Honolulu Medical Examiner's Office.

The only emperor penguin known to have swum from Antarctica to Australia was released at sea 20 days after he waddled ashore on a popular tourist beach.