Everyone loves Brita water filters, but they might not really be any more useful than sapwood from trees.
Locally sourced materials and solar energy team up to put an autoclave just about anywhere.
The Solar Ship is a solar-powered blimp that's meant to deliver medicine to rural parts of Africa. It's a nearly fuel-less solution to a big problem.
It's a fact: technology is a mostly male industry. It's a problem that affects IT well outside of Silicon Valley. It even stretches into the Kenyan capital of Nairobi, where a group of women are fighting back with a femme-centric network of designers, programmers and other techies.
The silver lining of being a developing continent is that you can skip entire stages of technological progress without suffering through the in-between. Africa, for example, now has more mobile subscribers than the United States or Europe, and that means big things for African economies.
Not everyone has access to electricity all the time. And not everyone has access to chemical energy or solar energy or nuclear energy all the time. But everyone on Earth has access to gravitational energy whenever they need it. The problem has always been making gravity useful for something, but this gravity-powered light manages to do exactly that.
We've got some pretty cheap phones here in the States that are pay-as-you go — sometimes referred to as burners — though you probably haven't used too many of those unless you don't have a cellular plan or you're a...