The winter of 1932 in the US was so cold that Niagara falls froze completely solid!
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Circumhorizontal arcs (loosely known as fire rainbows) are the rarest of all naturally occurring atmospheric phenomena.
21
Dirty snow melts faster than clean.
350
Rain contains vitamin B12.
188
Temperatures have been cooling since 2002, even as carbon dioxide has continued to rise.
106