Hours of survey work have added an additional 8 miles to the passageways at Mammoth Cave National Park in Kentucky
An extraordinary 120-million-year-old fossil bird from China reveals that the animal had a sexy but vaguely impractical tail.
The discovery of a massive dinosaur jawbone dating to 90 million years ago reveals a previously unknown apex predator that prowled in what is now Uzbekistan.
The maimed and tortured remains of Atacama Desert mummies reveal that the region’s earliest farmers cultivated a climate of extreme violence.
An angler fishing in Tampa Bay was surprised to reel in an unusual fish that looked just like a flour tortilla.
A "murder hornet" nest in Washington had 113 adults and 1,500 developing Asian giant hornets inside.
Archaeologists in Poland have discovered a mass grave from World War II that contains the remains of about 500 people.
About 100 years after the Romans invaded Britain, a crafter created an elaborate key handle depicting a lion devouring a wild-eyed barbarian.
A change in temperature and humidity levels may explain why a print on a statue sculpted by Michelangelo is now visible.
Wild cockatoos have figured out how to open garbage can lids, and the practice is spreading due to social learning.