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Ask Dr. Global Change
The U.S. Global Change Research Information Office offers this archive of frequently-asked questions about global environments. If you don't find the answer you seek, you can also submit questions.

Scientific American: Ask the Experts
Scientists answer questions about astronomy, biology, chemistry, computers, the environment, geology, mathematics, medicine, and physical science.

Kids' Talk
Find answers to the many questions kids ask. | © 2009 The Franklin Institute - All rights reserved.