A single speck of dust is half way in size between a subatomic particle and the Earth.
15
A cesium atom in an atomic clock beats over nine billion times a second.
43
Sound travels about 4 times faster in water than in air.
408
Each day, up to 150 species of life become extinct.
-23
Nearly 50% of the world's scientists are assigned to military projects.
71
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21