How Radio Works - 1937

Turns out radio works pretty much the same way today as it did in 1937. This little GM sales film actually explains how radios work,and does a pretty good job of it, too.

Check out the 'aerial' on the 'radio set' in the car.

http://www.youtube.com/watch?v=6VHtZr_xsT8

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Solar Flares and Toilets?

A new NASA-funded study details what might happen to our modern, high-tech society in the event of a 'super solar flare' followed by an extreme geomagnetic storm. Some of the conclusions might surprise you.

http://science.nasa.gov/headlines/y2009/21jan_severespaceweather.htm?list1002726