Brass doorknobs automatically disinfect themselves in about 8 hours.
18
A ball of glass will bounce higher than a ball made of rubber.
73
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
Sound travels fifteen times faster through steel than through air.
134
Pure water (H2O) does not conduct electricity on its own.
46
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15