An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Your body is creating and killing about 2.4 million red blood cells per second.
17
Lurch, a Watusi bull, had the largest horns in the world.
32
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).
12