Mars had an oxygen-rich atmosphere around 4 billion years ago
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
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
The largest breed of rabbit is the Flemish Giant.
65
The strangers in your dreams are actually people that you've seen in real life.
50
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16