Nearly 50% of the world's scientists are assigned to military projects.
71
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Pure water (H2O) does not conduct electricity on its own.
46
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Out of all the senses, smell is most closely linked to memory.
146
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0