Extinct-in-the-wild species in conservation limbo

For species classified as "extinct in the wild", the zoos and botanical gardens where their fates hang by a thread are as often anterooms to oblivion as gateways to recovery, new research has shown.

Leak and destroy: On the hunt for climate killing gas

After finding a rusty gas canister near his midwest US home, Rick Karas checked online if it was worth anything. Incredibly, it turned out to be a coveted commodity in the battle against climate change.

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