Millions around the world watched on February 1, 2003, when the Space Shuttle Columbia was ripped apart upon re-entry, and NASA investigations later revealed that the tragedy was likely preventable.

In The Last of Us, an infection called cordyceps causes a zombie outbreak — but it's actually a real fungus that kills insects and is used in herbal medicine.

In 2016, Otto Warmbier was sentenced to 15 years of hard labor for allegedly stealing a propaganda poster from a North Korean hotel, but he suffered a brain injury that rendered him comatose immediately after his trial — and he died without ever telling his side of the story.

Connie Converse wrote and performed trailblazing music in the 1950s, but one day in 1974, she drove off looking for a fresh start — and was never seen again.

The surgeons risked their own lives, using uncommon procedures to avoid detonating the grenade.

Spending more time in nature could yield positive mental health results, but limited access in parts of the world is a significant hurdle.

Scientists discovered the new species while studying the lineage of giant tortoises on Madagascar.

Walrus sightings are a rarity in the British Isles, so the arrival naturally became a spectacle and gathered large crowds — many of whom witnessed the exhibitionist display.

The 1956 collision between the SS Andrea Doria and the MS Stockholm near Nantucket left 51 people dead and led to one of history’s largest civilian rescues at sea.

Researchers are calling the discovery the "largest Viking-Age find of this nature in more than ten years."