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See a Supersonic Ping Pong Bazooka in Action

Purdue University professor Mark French has been using a subsonic ping pong gun to teach his students about physics. But why be subsonic when you can go supersonic? Not satisfied with propelling the balls a measly 400mph, French and his students recently built a ping pong bazooka that fires the balls at an astounding 900mph—135mph faster than the speed of sound.... READ ON

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6 Crazy Things You Can Make with 3D Printers

"Printing" technology has quietly evolved over the past few decades to allow users to create—on demand, from files—everything from gun parts to DNA.... READ ON

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This is What a Fish Thought Looks Like

Pretty Pictures

Rare Vintage Photos of Early 20th Century Paris

In 1903, with a little help from the potato, the Brothers Lumière revolutionized color photography.... READ ON

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A Brief History of SimCity

With a new SimCity coming soon, let's look back at the Sim franchise.... READ ON

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Restoring Hitchcock's The Man Who Knew Too Much

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5 Bold Proposals For Cleaning Up Space Junk

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A Short History of Revolutionary and Civil War Submarines

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12 Unconventional Radiators

Because it's very cold.... READ ON

Article

One Company's Bold Plan to Mine Asteroids

Brace yourselves for the coming asteroid gold rush. U.S. company Deep Space Industries this week revealed plans to send spacecraft on missions to mine near-Earth asteroids for precious metals. According to the announcement, the company plans to dispatch a series of small, low-cost satellites by 2015.... READ ON