The Earth sees about 760 thunderstorms every hour, scientists have calculated.
185
The winter of 1912 was so cold that Niagara Falls froze over.
35
The winter of 1932 in the US was so cold that Niagara falls froze completely solid!
442
-40 degrees Celsius is equal to -40 degrees Fahrenheit.
96
Temperatures have been cooling since 2002, even as carbon dioxide has continued to rise.
106
Moist air holds heat better than dry air.
114
It snows more in the Grand Canyon than it does in Minneapolis, Minnesota.
113
Dirty snow melts faster than clean.
350