Phenologist Bill Felker: Climate changing, but subtly

...Felker is skeptical of claims that spring comes much earlier in some parts of the world than it once did, noting the onset of the seasons vacillates from year to year.

"I think the jury is out as to whether (climate change) is really going to affect us in our lifetimes," he said. "I haven't seen the kind of effect I read about in the newspapers."