0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Sound travels about 4 times faster in water than in air.
408
Cold water weighs more than hot water.
93
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Research indicates that plants grow healthier when they are stroked.
173
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
According to studies, men change their minds two to three times more often than women.
72