With my boys, this is a moot point. They wear sweat pants during the warm months of Texas, complain to me that they are hot and wear shorts to school in January & February and complain that they are cold.
It seems that MTV plays their Winter rap videos in the Summer and in the Winter they play...
I drew the line when my Fifteen year old wanted to wear a black wool/plastic knit hat during the summer. I figured that the extra heat to his head would keep him from watching out for traffic when crossing streets, even though he thought that he would be cool,rad, phat or what-ever.
For my skeeters, I use good ole Malathion.
But the shells on the eggs of eagles and other raptors is thinned by the presence of DDT and its metabolites in the food chain. Therefore, it was destroying the eagle population, because the eggs were being crushed during the brood period, and the total hatch was way down. This, too was never conclusively proven, but it made a dandy talking point, because, after all, aren't eagles the symbol of America? And DDT has the most annoying characteristic of persisting in the environment, degrading only slowly. Years ago, low levels of DDT could not be detected, but improved technology made it possible to detect DDT in terms of parts per billion. There was something called the Delaney Amendment, that made it illegal to process for food any raw materials that contained ANY traces of certain chlorinated hydrocarbons, of which DDT is one. So, DDT had to be outlawed completely. In spite of any benefits that may have come from its use.