These photos were clearly taken at different times of year. In the photo on the right, there is leaf coverage on the ground (even though all of these theorists suggest that one of the worms' crimes is eating all the decaying leaves), just like the woods behind my house right now. The herbal undergrowth has all died back by now. That tends to happen at this time of year. It's called autumn. This whole thing reminds me of global warming. Enviornmentally conscious scientists are not sure whether there is a problem or what might be causing it, so they assigne a man made cause to the perceived "problem."