A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
You forget 90% of your dreams.
256
Lurch, a Watusi bull, had the largest horns in the world.
32
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Iceland has been so culturally isolated through history since the Vikings, that compared to other Scandinavian counties, people who speak Icelandic can still read the old Norsk sagas.
4
Mars had an oxygen-rich atmosphere around 4 billion years ago
13