For decades, rumors of alien spacecraft at Area 51 have captivated the public imagination. In what is now known as one of the most infamous government cover-ups, an absence of information fueled wild ...

Below are excerpts from radio transmissions and video recorded on the day in May 1999 when NOVA-sponsored climbers discovered the body of George Leigh Mallory high on Mt. Everest. Mallory disappeared ...

Journey back to when humans first ventured into the Americas, a world teeming with colossal megafauna and dramatic climate shifts. Witness their ingenious survival tactics against formidable predators ...

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"It's not easy being a public enemy," writes Neil deGrasse Tyson in his book The Pluto Files. When Neil's museum grouped Pluto not among the planets but rather with icy comets in an obscure region ...

View a slide show of the Yamato's last hours, from its initial sighting by U.S. forces to the cataclysmic explosion that sealed its fate.

A woman holds two cannonballs of different masses. One is 10 pounds; the other is 1 pound. She is about to drop both objects at the same time.

In the early hours of October 7, 2014, while most of America slumbered, members of the Swedish Academy of Sciences were meeting to decide to whom they should award the Nobel Prize in Physics. The ...

A false-color image of Saturn based on near-infrared data from the Cassini spacecraft, which orbited the planet for 13 years. Image Credit: NASA/JPL-Caltech/SSI ...

In the fall of 1995, a team of researchers clipped 10 leaves from a potato plant, nestled them into beds of moistened soil, and shot half of them into space. The mission, conducted aboard the Space ...

Once you’ve seen a slime mold—its gooey, delicately branching structure oozing in a vaguely unsettling way along a log or leaf—you’re unlikely to forget it. They’re unmistakable because there’s ...

An electrical engineer works on Form Energy's 2022 battery module in the company's lab in Berkeley, California. Image courtesy of Form Energy Share Weirton, West Virginia has iron in its blood. The ...