electric currents

(But don't try this at home)

With just 15 minutes of a barely perceptible electric current passed through the brain, scientists at the University of Oxford … Continued

Or at least understand what’s happening when you use one.

We don’t have jet packs, flying cars or pill-sized three-course meals, but if the Dutch have anything to say about … Continued

In middle school I had a science teacher who would tell the class that, while we took tests, she could … Continued

A reader asks: Is it true that CDs can disintegrate after 20 years? How long will my digital photos last?