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Math

Shuffling the cards: Math does the trick

When to stop shuffling depends on the game.

Chemistry

Household cleaner makes blood removal simple!

Common household “oxy” cleaners remove blood almost too well.

Math

Book Review: The Princeton Companion to Mathematics, Timothy Gowers, ed

Review by Tom Siegfried.

Science & Society

All in a Day’s Work: Careers Using Science by Megan Sullivan

NSTA Press, 2008, 140 p., $15.95.

Climate

Fixing Climate: What Past Climate Changes Reveal About the Current Threat— And How to Counter It by Wallace S.