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With you in the room, bacteria counts spike

A person's mere presence in a room can add 37 million bacteria to the air every hour -- material largely left behind by previous occupants and stirred up from the floor -- according to new research by Yale University engineers.

Mar 28, 2012 4.4 / 5 (5) 4 | with audio podcast

Why Do We Have Fingerprints?

(PhysOrg.com) -- Unlike most wrinkles on our bodies, which appear due to bending and stretching of the skin, fingerprints aren't the result of repeated motion. Each of us is born with a unique set of them, ...

Apr 04, 2009 4.2 / 5 (45) 13 weblog