Zazzy
DIY
The 5-Minute Rocket
By Dave Prochnow Posted on 10.1.2008 6 CommentsWho says science isn't fun? Build this 5-minute rocket and you'll have hours of fun. Plus you might learn a thing or two about propulsion systems and rocket design along the way.
DIY
Let Burning Metals Lie
By Abby Seiff Posted on 6.11.2008 7 CommentsIf you ever see a large industrial metal fire (yes, they happen) on the news, you may be surprised at what the firefighters do to extinguish it: nothing. Several metals, including lithium, sodium and magnesium, can burn easily, and from time to time large amounts catch fire in factories. But even heaps of burning metal need not cause immediate panic. They don’t blow up; instead they tend to build up ash that chokes off their oxygen supply, so they slowly burn out.
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December 2009: Best of What's New
In our December issue, Popular Science names the 100 best innovations of the year: bombproof wallpaper, self-parking cars, the fastest helicopter, and 97 more. Plus inventor profiles and videos.
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