Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Out of all the senses, smell is most closely linked to memory.
146
Scientists are attempting to create a synthetic brain by reverse-engineering the mammalian brain down to the molecular level. A cellular human brain is predicted possible by 2023. It hopes to shed light on consciousness.
10
The bark of an older redwood tree is fireproof.
65
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39