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In Case You Missed It

Letters

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Trim TabsBarnaby Wainfan's recent article about trim tabs advised having enough stiffness in...

Down to Earth

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Getting the spark right. By Amy Laboda.

Shopping for Batteries

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Concorde and EarthX are standouts.

3 Years, 1 Minute, and 40 Seconds

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A Mazda-powered Harmon Rocket stomps the time-to-climb record.