Each weekday, the HowStuffWorks staff picks an interesting and informative link for the
Link of the Day section of HSW. You can also view previously chosen
links in the HSW Link Archive. Here is today's
Today's link points to a huge FAQ from NASA, with a feature that lets you ask Dr. Odenwald a question!
Check out the 30 categories, including Science Fairs at "Ask The Scientist."