The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Sound travels fifteen times faster through steel than through air.
134
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Out of all the senses, smell is most closely linked to memory.
146
The bark of an older redwood tree is fireproof.
65
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17