Global warming is making spring come earlier in much of the United States:

And sneezes are coming earlier in Philadelphia. On March 9, when allergist Dr. Donald Dvorin set up his monitor, maple pollen was already heavy in the air. Less than two decades ago, that pollen couldn’t be measured until late April.

Pollen is bursting. Critters are stirring. Buds are swelling. Biologists are worrying.

“The alarm clock that all the plants and animals are listening to is running too fast,” Stanford University biologist Terry Root said.

Blame global warming.

The fingerprints of man-made climate change are evident in seasonal timing changes for thousands of species on Earth, according to dozens of studies and last year’s authoritative report by the Nobel Prize-winning international climate scientists. More than 30 scientists told The Associated Press how global warming is affecting plants and animals at springtime across the country, in nearly every state.

But look on the bright side: Iowa legislator Dwayne Alons (Republican, of course) says we don’t need to worry about global warming in this age of air conditioning and refrigeration technology.

By the way, James Van Bruggen is running against Alons in House District 4, which is in the northwest corner of the state.