Circumhorizontal arcs (loosely known as fire rainbows) are the rarest of all naturally occurring atmospheric phenomena.
21
It snows more in the Grand Canyon than it does in Minneapolis, Minnesota.
113
The Earth sees about 760 thunderstorms every hour, scientists have calculated.
185
Carbon dioxide is a trace gas and by itself will produce little warming. Also, as CO2 increases, the incremental warming is less, as the effect is logarithmic so the more CO2, the less warming it produces.
11
Dirty snow melts faster than clean.
350
The winter of 1932 in the US was so cold that Niagara falls froze completely solid!
442
The speed of a typical raindrop is 17 miles per hour.
181