Circumhorizontal arcs (loosely known as fire rainbows) are the rarest of all naturally occurring atmospheric phenomena.
21
-40 degrees Celsius is equal to -40 degrees Fahrenheit.
96
There is enough energy in one bolt of lightning to power a home for two weeks!
102
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 1912 was so cold that Niagara Falls froze over.
35
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
The Earth sees about 760 thunderstorms every hour, scientists have calculated.
185