Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Lurch, a Watusi bull, had the largest horns in the world.
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The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
14
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
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.
21
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Your body is creating and killing about 2.4 million red blood cells per second.
17