The smell of freshly cut grass is actually a plant distress call.
31
Out of all the senses, smell is most closely linked to memory.
146
4.5 pounds of sunlight strike the Earth each day.
27
A cesium atom in an atomic clock beats over nine billion times a second.
43
Scientists aren't sure what color dinosaurs were.
312
Each day, up to 150 species of life become extinct.
-23
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
