A cow produces around 200,000 glasses of milk in her lifetime.
373
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
There are so many kinds of apples that if you ate a new one everyday, it would take over 20 years to try them all.
34
Only about 2% of the world population has green eyes.
36
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
If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
31