The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
A cow produces around 200,000 glasses of milk in her lifetime.
373
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Your thumb is about the same size as your nose.
124
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
14
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