H-O-T-T Hot

Wm wanted to know why people have different color skin. So I explained about melanin and evolution and how people had once, a very, very long time ago, all been very dark brown but then as they moved around, those that lived in different climates had developed different melanin levels, and therefore different colored skin, to survive in colder weather - so some of us developed lighter, peachy skin. So a couple weeks go by...and it's obviously percolating in Wm's pointy head. Then this morning at breakfast he goes, "I don't look like Daddy...because he's got brown skin. And I know now that he was born someplace warm!"