Evolution Observed in Just 30 Years?

Last week I wrote about a startling study that was supposed to illustrate powerful evidence for evolution by showing that elephants evolve into elephants. Well, I have another one for you this week that���s just as shocking���marine snails that evolved into . . . marine snails! (Okay, I am speaking tongue in cheek again!)

Here are the details: On a tiny rocky islet (a ���skerry���) off the coast of Sweden, lived a group of marine snails . . . until a toxic algal bloom killed the entire populatio...