Passengers on the Beijing subway can pay with plastic bottles.
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MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
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Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
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On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
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Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
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Cuban rescue workers use sniffer rabbits to find people in collapsed buildings.
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