The circumstances surrounding death of 70-year-old Il Hun Ro of Los Angeles are unknown, but Yellowstone officials do not suspect foul play.

For thousands of years, smallpox ravaged populations around the world, killing 30 percent of those it infected — until Edward Jenner discovered a vaccine in 1796 that eventually helped lead to the disease's eradication in the 1970s.

Researchers believe that 3,000-year-old bronze irons used by ancient Egyptians were too small for cattle or horses, and may have been used for enslaved people instead.

The minks may have been set loose by the Animal Liberation Front, an activist group dedicated to ending the abuse and exploitation of animals.

Discover 11 of the most shocking ways royals have died, from the Greek King killed by a monkey to the English Conqueror who buckled under his own weight.

Setting out on June 20, 1970, Dave Kunst walked 14,450 miles around the Earth — but not without experiencing hardships along the way.

A PETA investigation found that coconut companies enslave monkeys in Thailand and force them to live in isolation while toiling under abusive conditions.

Though these statues discovered in San Casciano dei Bagni are around 2,300 years old, they've remained shockingly well preserved beneath layers of mud.

The photos were discovered in an album owned by a Jewish-American soldier, but even his family isn't sure how they came into his possession.

These gadgets from the late 18th and early 19th centuries have a definitive Steampunk look — but some had more of a lasting effect on society than others.

While some of the octopuses appeared to throw objects to clean their dens or discard food, more than half were recorded throwing objects after fighting, mating, or grappling with another octopus.