Zinaida Portnova was a typical teenager in Belarus, but when the Nazis invaded in 1941, she became a deadly resistance fighter who would later be awarded the Soviet Union's highest honor.

Guitarist Chris Pérez married Tejano singer Selena Quintanilla in 1992, but what happened to Selena's husband after her tragic murder in 1995?

In March 1981, Marianne Bachmeier opened fire in a crowded courtroom and killed Klaus Grabowski — the man on trial for murdering her 7-year-old daughter.

After the Nevado del Ruiz volcano erupted on November 13, 1985, 13-year-old Omayra Sánchez became trapped in debris. Three days later, French photographer Frank Fournier captured her final moments.

From the crew's last days of training to the moment the Space Shuttle Challenger exploded, see one of the worst disasters in American aerospace history as it happened.

The bright green flower Fritillaria delavayi has been harvested by humans for medicinal purposes for the last 2,000 years. Now, it's turning brown to camouflage itself.

The three-quarter-inch piece discovered in eastern China is 8,500 years older than similar artworks of its kind found in the region.

"Finding Chlamydiae in this environment was completely unexpected... And of course begged the question, what on earth were they doing there?"

The Stellasaurus or 'star lizard' roamed the badlands of Montana some 75 million years ago.

The paving was laid around the time of the Pantheon's original construction between 27 and 25 B.C.