How Airplanes Can Make It Rain

If you’ve ever looked up at the sky when you hear the hum of an airplane, chances are you’ve seen the channels, streaks, and halos that sometimes pattern the sky in the aircraft’s wake. These cloud constellations can happen because of temperature changes as airplanes pass through certain clouds, as we learned in 2010. But this …

Oil: Could the Economic Recovery Be Running Out of Gas?

Gasoline is like the circulatory system of the American economy. When it’s working fine, you barely notice it. But if something goes wrong, you end up in mortal trouble really fast.

Is the struggling U.S. economy headed towards a gasoline-induced heart attack? A report by the Lundberg Survey of American cities found that gas …

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