HUGE SNAKES and tiny horses?

“As terrifying as the thought of a gigantic snake might be, or as precious as the thought of a football-size horse might be, don't go looking for them any time soon. These changes take centuries, not years. But you might want to leave your great-great-grandchildren a heads-up note, just in case.”

And so ends a pretty informative article on the relative size of animals as a response to environmental temperature. Warmer favors larger reptiles and smaller mammals and the converse for cooler. So far so good.

Then, is a classic case of total misunderstanding of the evolutionary process, the author makes the classic blunder: “- - - - centuries, not years.” The process would actually take millennia at the least, and more likely millions of years to actually come up with snakes the size of school buses and horses the size of small dogs. But wait, don’t we have mini-horses and gigantic anacondas already? Yup. And the anacondas live in tropical places and the horses live in apartments. How long did it take to get these out sized animals? Millions of years in the case of the snake, and dozens in the case of the miniequines. Problem is that snakes are already at the limit of their size or they would be bigger, and the horses are classic inbred freaks who wouldn’t last 10 minutes in nature.

So don’t worry. No bus-sized snakes for your grand kids or mouse-sized cattle either. Evolution takes longer than that, and besides, the conservatives assure me that there is no such thing as climate change.

Image and quote: http://news.yahoo.com/a-snake-the-size-of-a-school-bus--it-happened-before--and-could-happen-again-153534343.html