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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Your thumb is about the same size as your nose.
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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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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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Cows can sleep standing up, but they can only dream lying down.
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Your body is creating and killing about 2.4 million red blood cells per second.
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Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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