July 22, 2019, 4:16 p.m. by Lloyd Alter
A new study finds that older people react a lot more slowly when they take the wheel.
Video: High school students build eco-friendly car
October 20, 2009, 1:19 p.m.
A group of high school students from Philadelphia is on a mission to prove that it doesn't take an automotive giant to build a fuel-efficient car.
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In 1972, a computer model predicted the end of the world — and we're on track
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