One 75-watt bulb gives more light than three 25-watt bulbs.
57
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
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Pumice is the only rock that floats on water.
14
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39