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
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199