Water from the fence turns to steam as the sun rises.

On a crisp autumn morning, the sun began to rise and heat up our wonderful planet. 

My son yelled, "Mom, the fence is on fire"!

We turned and low and behold, the fence looked like it was smoking.

Why would the fence look like it was on fire?  What science would explain what was happening?

The fence wasn't on fire.  It had absorbed the dew during the night and early morning.  When the sun rose, the wooden fence and the water in it began to heat up.  The liquid water turned to a gas  and began to rise.

Science in unexpected places!