The smell of freshly cut grass is actually a plant distress call.
31
Sound travels fifteen times faster through steel than through air.
134
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
A cesium atom in an atomic clock beats over nine billion times a second.
43
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Each day, up to 150 species of life become extinct.
-23
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21