Many Germans have three or four old cell phones lying about in a drawer somewhere without realising their value. A company is now offering to buy up the defunkt devices that contain copper, silver, gold and rare earth metals.
China is cleaning up. The country was once the world's biggest hub for recycling electronics. But as it bans trash imports, it may be driving some recyclers out of business.
After a major Dutch supermarket chain confirmed a new plastic-free aisle, a grassroots movement to combat millions of tons of packaging waste is finally gaining momentum across Europe.
Cities hold tons of materials that can be reused — and doing so can address over-exploitation of scarce natural resources. From buildings to electronic waste, we are surrounded by value. So how does urban mining work?
Climb the stairs with a spring in your step - literally! Scientists have created suspension steps that absorb users' energy during descent, to give it back later. They're supposed to make life easier for the elderly.
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