We took copious notes while testing the best note-taking apps available on iPad--feel free to sneak a peek at our answer key.

Similar to human fingerprints, cow noses are detailed, nearly unique, difficult to change, and remain the same over the life of an individual, making them ideal long-term markers of identity.

The new MEGA VAC Plus Smoke Evacuator provides surgeons with a quiet, comfortable smoke evacuation tool with adjustable flow rates, evacuation times and a patented internal valve to prevent backflow.