A hiker named Kenny Veach disappeared in 2014 after he claimed to have found a strange cave shaped like a capital M near Area 51 in Nevada.

It belongs to a giant ground sloth that lived during the last Ice Age.

The Boston Molasses Flood killed 21 people and injured 150 others.

We take 93 million selfies per day. Some of us are more reckless than others.

In the 1930s, Joseph Stalin deported thousands of prisoners to a gulag with so little food that it would soon become known as "Cannibal Island."

Found only in the forests of Papua New Guinea, this unique insect's population has been steadily decreasing in recent years.

The Russian revolution is a long story of quick social change in a short amount of time. Read about--and expand your knowledge via pictures--it here.

Residents of Louisiana's Cancer Alley report disproportionately high rates of cancer, miscarriages, and respiratory ailments.

The discovery highlights just how far-reaching the effects of harmful human activity can be to our environment — even where we least expect it.

Experience the most outrageous stories and photos from the Weathermen a.k.a. the Weather Underground, the Vietnam War-era radicals that made their protest...