Mars had an oxygen-rich atmosphere around 4 billion years ago
13
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
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
You forget 90% of your dreams.
256
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
Cows can sleep standing up, but they can only dream lying down.
745