Aphrodisiac for fish and frogs discovered

A supplement simply added to water has been shown to boost reproduction in nematodes (roundworms), molluscs, fish and frogs – and researchers believe it could work for humans too.

David Attenborough calls for peepholes in zoos

Veteran British naturalist David Attenborough called Monday for gorillas in zoos to be kept behind walls with peepholes rather than glass panels, to respect their privacy.

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