In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
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
One barrel of petroleum holds 42 gallons.
20
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Out of all the senses, smell is most closely linked to memory.
146
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
Research indicates that plants grow healthier when they are stroked.
173