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 travels about 4 times faster in water than in air.
408
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
One third of the electricity produced on earth is used to power electric light bulbs!
75
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65