Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Sound travels about 4 times faster in water than in air.
408
Your brain is 80% water.
525
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
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
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101