Bottles and other plastic products in a pile-up of trash and other flotsam in the Drina river.
Thermoelectric generators probably won’t eliminate the charger for your Apple Watch, but for smaller, screenless wearables, the heat constantly escaping from your skin could fundamentally change how we power our devices.
Swifties: You can do better.
Only about 5% of plastic in the U.S. actually gets recycled.
Swirls of plastic pollution amidst driftwood. Photo: Armin Durgut (AP) 
