One 75-watt bulb gives more light than three 25-watt bulbs.
57
The only letter not appearing on the Periodic Table is the letter "J".
180
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Most dust particles in your house come from dead skin.
48
The storage capacity of human brain exceeds 4 Terrabytes.
140
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