Mars had an oxygen-rich atmosphere around 4 billion years ago
13
A cow produces around 200,000 glasses of milk in her lifetime.
373
Cows can sleep standing up, but they can only dream lying down.
745
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
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
14
The oldest glowing lightbulb was first switched on in 1901 and lives in fire stations in Livermore, CA. It is known as the Centennial Light.
118