With discoveries dating back 9 million years, researchers have unearthed the remains of saber-toothed salmon, whales, dolphins, and megalodons.

On the morning of September 30, 1999, Hisashi Ouchi, Masato Shinohara, and Yutaka Yokokawa were preparing uranium-enriched fuel at a plant near Tōkai, Japan, when they triggered a nuclear reaction that killed Ouchi and Shinohara and exposed hundreds of others to high levels of radiation.

For thousands of years, people in Ireland deposited these butter slabs in peat bogs as a way to preserve them — and sometimes even buried them as offerings to the gods.

Cypriot dwarf hippos and elephants were a fraction of the size of their mainland counterparts, but Stone Age humans likely hunted them to extinction 12,000 years ago.

Globidens alabamaensis had unique, globular teeth that were perfectly suited for crushing the shells of turtles and mollusks.

Mafia wives like Mae Capone and Victoria Gotti stood behind their mobster husbands for decades — and sometimes even indulged in the criminal lifestyle themselves.

The Sasayamagnomus saegusai specimen found in Japan was about three feet long and weighed 22 pounds, making it much smaller than its relative the Triceratops.

Yōkai are supernatural beings like kappas, demons, and even haunted household objects that have appeared in Japanese art and folklore for centuries.

While clearing rubble from a collapsed gate at the Banteay Prei Temple within Cambodia's historic Angkor Wat Archaeological Park, workers stumbled upon a life-sized statue of a temple guardian dating back 700 years.

In a grisly burial dating back to the 13th century, the child was decapitated and weighed down with rocks on their torso to prevent them from climbing out of the grave.

From Riley the golden retriever to Apollo the German Shepherd, these canine companions remained calm and performed their duties in the face of chaos following the terrorist attacks of September 11, 2001.