China plastic waste ban throws global recycling into chaos

From grubby packaging engulfing small Southeast Asian communities to waste piling up in plants from the US to Australia, China's ban on accepting the world's used plastic has plunged global recycling into turmoil.

The ethical gold rush: Gilded age for guilt-free jewellery

Forget how many carats—how ethical is your gold? As high-end consumers demand to know the origin of their treasures, some jewellers are ensuring they use responsibly sourced, eco-friendly or recycled gold.

Why researchers are mapping the world's manure

Farmers rely on phosphorus fertilizers to enrich the soil and ensure bountiful harvests, but the world's recoverable reserves of phosphate rocks, from which such fertilizers are produced, are finite and unevenly distributed. ...

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