In zero gravity, a candle's flame is round and blue.
16
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
Iron weighs more after it rusts.
68
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Hot water can freeze faster than cold water.
181
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Sound travels about 4 times faster in water than in air.
408
Your brain is 80% water.
525