If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
If the chemical sodium is dropped into water it will immediately and violently explode.
67
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Scientists are now able to grow 'beating' heart tissue in a lab!
162
German chemists made a replica of a trophy the size of one molecule.
68