Host Joe Hanson explains the science of dust in a recent episode of PBS Digital Studios series It’s Okay To Be Smart.
Did you know that one piece of space dust falls on your head every day? Or that a boxcar of dust leaves the Sahara every 4 seconds? Or that half the Amazon is fertilized by dust swept over from a dry lake in Africa? Or that U-2 spy planes were outfitted with sticky pads to catch space dust for scientists?
submitted via Laughing Squid Tips