Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Cows can sleep standing up, but they can only dream lying down.
745
No one knows Albert Einstein's last words. Just before he passed, he spoke several words in German, but his nurse only knew English.
154
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Lurch, a Watusi bull, had the largest horns in the world.
32
There is a persistent storm in Venezuela that produces lightning 140 to 160 nights a year, 10 hours per day and up to 280 times per hour and has been going since at least the 16th century.
25
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140