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
The force of a suction cup is calculated using F=AP.
15
Iron weighs more after it rusts.
16
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116