tech wearables

Sports
The Apple Watch's heart rate monitor alerted the teen of his problem before it was too late.
Videos
Want to just press a button and have all of your problems go away? Silicon Valley is trying to figure it out.
Science
Brain stimulation has gone DIY -- but some neuroscientists aren't on board.
Style & Beauty
If you weren't already dying to get your hands on an Apple Watch, one look at Beyoncé and Karl Lagerfeld's fancy gold versions