Indoor pollution is 10 times more toxic than outdoor pollution.
62
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Aluminum used to be more valuable than gold!
84
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
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