The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
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A cow produces around 200,000 glasses of milk in her lifetime.
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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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Iceland has been so culturally isolated through history since the Vikings, that compared to other Scandinavian counties, people who speak Icelandic can still read the old Norsk sagas.
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