scramjet engine

The Hypersonic Age is Near

Recent breakthroughs in scramjet engines could mean two-hour flights from New York to Tokyo. They could also mean missiles capable of striking any continent in a moment's notice. No wonder the race to develop them is as fierce as ever

by Nick Kaloterakis:  Nick Kaloterakis
See more pictures of the test program in action, launch the gallery here.

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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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