A cubic yard of air weighs about 2 pounds at sea level.
31
One barrel of petroleum holds 42 gallons.
20
One ragweed plant can release as many as one billion grains of pollen!
51
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
Cold water weighs more than hot water.
93
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
Sound at the right vibration can bore holes through a solid object.
134
Scientists aren't sure what color dinosaurs were.
312