Energy & Green Tech

Improving solar cell efficiency with a bucket of water

Looking at your cell phone, you realize the battery is low, which means you have to make another long walk into town to pay money to charge the device. By the time you get home, it's getting dark. You light the kerosene lamp ...

Internet

Alphabet closes down internet balloon network project 'Loon'

Google parent company Alphabet announced Friday it was shutting down "Loon", a high-profile project aiming to deliver wireless internet via flying balloons in the stratosphere, because it is not commercially viable.