Conservation International's Rapid Assessment Program spent three weeks traversing the rainforests of Honduras, discovering and documenting hundreds of species — and some are entirely new to science.

Fossilized evidence of a now-extinct primate species suggests prehistoric monkeys traveled more than 900 miles on natural rafts.

There are around 1,200 archaeological sites on Gran Canaria in the Canary Islands. This one, however, contained the remains of aboriginal Guanche newborns.

Items found with the skeletons — including iron arrowheads, horse harnesses, and a broken vase — helped researchers trace back the burial to the 4th century B.C.

After three months of beating and starving 16-year-old Sylvia Likens — and getting her children and neighborhood kids to help — Gertrude Baniszewski viciously murdered her on October 26, 1965.

Lost continents continue to be discovered as the technology to study our ever-shifting tectonic plates grows more advanced.

Ottis Toole was convicted of committing six murders between 1980 and 1983, but he admitted to killing more than 100 victims, including Adam Walsh, the six-year-old son of America's Most Wanted host John Walsh.

The wealth of material recovered from the site is so stunning that archaeologists believe this discovery will allow research to advance by "leaps and bounds."

It's 180 feet long, more than 1,000 years old, and might just be one of the most striking finds in Mayan archaeology.

"Anglo-Saxon crosses of this kind are exceptionally rare, and only one other — much less elaborate — is known from the ninth century."

The city of Falerii Novi was abandoned in 700 A.D. and has been buried ever since.