Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
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
The bark of an older redwood tree is fireproof.
65