As the world — and its landfills and water treatment plants — get more and more crowded, future houses will have to cut down on their waste. Or they could just repurpose it. For instance, they could use household sludge to feed bioluminescent bacteria to light up a room. It’s so simple! Really!
The tricky thing about buying a bike (or anything else) for a kid is that there's a 99.9-percent certainty they'll outgrow it. The genius behind the Kilobike is that while they're between the ages of 6 and 12, the bike will grow with them.
I've never wanted to attach a water bottle cage to my bike; I like it to be as free of clutter as possible, both for aesthetics and to keep the weight low. But I can't say that I've never wanted to have a quick drink handily accessible when I'm riding without a bag.
That's where this bottle cap clip concept by Matthias Ries comes in.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.