Circumhorizontal arcs (loosely known as fire rainbows) are the rarest of all naturally occurring atmospheric phenomena.
21
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
Oak trees are struck by lightning more than any other tree.
266
Contrary to popular belief, lightning travels from the ground upwards not from the sky downwards.
101
Moist air holds heat better than dry air.
114