Female praying mantises engage in what's known as sexual cannibalism. They first eat their suitors, then they mate with them.

In 1980, the U.S. men's hockey team defeated Russia against all odds and later became gold medalists. But a very iconic piece of sports memorabilia from the championship game has mysteriously vanished.

Green ants build their grand nests out of leaves, which they pull and join together with silk. Amazingly, this silk is produced by their newborn larvae.

An archeologist notes that King Tut's chamber was designed and decorated differently from other Egyptian pharaohs. One theory is that his tomb was originally created for a member of the opposite sex.

A murder aboard a commuter jet in December 1987 culminates in a catastrophic crash, bringing investigators from the NTSB and FBI together to search for answers.

The Peregrine falcon is not your average avian predator. When hunting, this remarkable bird will fly to great heights, then dive bomb its prey abruptly at speeds of up to 242 mph.

The assassin bug is one of the most cunning predators in the micro world, gluing the exoskeletons of its prey to its back as camouflage. While disturbing, it's a very effective survival strategy.

During WWII, the 1st Special Service Force was an elite unit with a remarkable record of never having lost a battle. Because they were outnumbered, they resorted to vicious psychological tactics to intimidate German troops.

During the Vietnam War, veteran David Larson was helping transport a special ops team into a mission zone when his crew was ambushed. In the midst of a raging shootout, Larson courageously fired back until his companions were safe.

Airline seats are tested extensively to prepare them for their life aboard a plane. Once installed, it's likely they'll stay in service for up to 12 years.