To read your blood pressure measurements, it's important to know what's considered hypertension, and when you should seek medical attention.

Arnie Negrete shows what ink does on water in a surprising test.

The science pros at The King of Random extract ink from 1,000 pens and reveal the surprising result.

Amazon's Big Deal Days event ends tonight, so there's still time to get a jump on your holiday shopping. From PCs and ...