Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The strangers in your dreams are actually people that you've seen in real life.
50
Your thumb is about the same size as your nose.
124
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The largest breed of rabbit is the Flemish Giant.
65
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94