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Ask-A Sites

Ask Dr. Math

Drexel University wonderful Ask-A-Mathematician site

University of Toronto Blue Book of Experts

Look up an expert in any field and email or phone in your question

Newton Ask-A-Scientist

USA Argonne National Labs partially working Ask-A-Scientist site

Scientific American Ask-An-Expert

Lots of great questions and answers, but they only answer and publish selected questions.

Mad Scientists Network

One of the best archives of science questions and answers on the web

The New Scientist magazine Last Word

Has great questions and answers, but they don't answer all submissions.

PhysLink.com

Physics and astronomy online educational reference site.

How Things Work

The physics of everyday life, by Louis Bloomfield, U. of Virginia. Has good archive.

Ask An Expert

Collection of links to ask a scientist sites.