The average home creates more pollution than does the average car.
33
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0