4.5 pounds of sunlight strike the Earth each day.
27
The earth is approx. 6,588,000,000,000,000,000 tons.
175
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
One ragweed plant can release as many as one billion grains of pollen!
51
The smell of freshly cut grass is actually a plant distress call.
31
A cesium atom in an atomic clock beats over nine billion times a second.
43
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
Iron weighs more after it rusts.
16