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NOVA | Astroid: Doomsday or Payday?

Posted by WMHT Web Editor

Asteroid: Doomsday or Payday? Preview Will future asteroids trigger massive extinctions—or be mined for precious minerals?

Watch Wednesday, November 20, 2013 at 9pm on WMHT TV.

The asteroid that exploded in the skies over Siberia injuring more than 1,000 and damaging buildings in six cities was a shocking reminder that Earth is a target in a cosmic shooting range. From the width of a football field to the size of a small city, these space rocks have the potential to be killers. In a collision with Earth, they could set off deadly blast waves, raging fires and colossal tidal waves. But some audacious entrepreneurs look at asteroids and see payday, not doomsday. Some asteroids are loaded with billions of dollars’ worth of elements like iron, nickel and even platinum. While NASA plans an ambitious mission to return samples from a potentially hazardous asteroid, would-be asteroid miners are dreaming up their own program to scout for potentially profitable asteroids.

Can scientists unravel the mysterious phenomena that lurk between Earth and space?

NOVA scienceNOW News

Five Reasons to Eat Insects

Save room for bugs! They're the future of green cuisine.

Profile: Shaundra Daily

This software engineer and dancer found her groove teaching children about their emotional lives.

Nature follows one of the most fearless animals in the world: the honey badger.

PBS Nature News

Penguins: Spy in the Huddle: Baby Emperor Penguin Emerges from Shell [Video]

Please view the original post to see the video. An emperor dad stands watch as a penguin hatchling pecks its way free. For the past two months, the father has done nothing but care for the egg,

Penguins: Spy in the Huddle: Rockhopper Penguins Make Landfall [Video]

Please view the original post to see the video. Rockhopper penguins brave crashing waves to reach their breeding grounds in the Falkland Islands. They appear at the same time each year, traveling ...