The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
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
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The average home creates more pollution than does the average car.
33
Pure water (H2O) does not conduct electricity on its own.
46
A cubic yard of air weighs about 2 pounds at sea level.
31
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9