It snows more in the Grand Canyon than it does in Minneapolis, Minnesota.
113
Dirty snow melts faster than clean.
350
Temperatures have been cooling since 2002, even as carbon dioxide has continued to rise.
106
The speed of a typical raindrop is 17 miles per hour.
181
The Earth sees about 760 thunderstorms every hour, scientists have calculated.
185
Snowiest city in the U.S. : Blue canyon, California.
112
Moist air holds heat better than dry air.
114