May 3, 2015; 4:07 AM ET
After temperatures rise this weekend, Harrisburg will experience a taste of summer early in the new week. more >
The long, harsh winter at the start of 2014 led some experts to predict that the cold season's "polar vortex" would turn into a "pollen vortex" during the warmer parts of the year, with a massive pollen eruption and a brutal allergy season.
The annual surge of sneezing, watery eyes and runny noses for allergy sufferers is only poised to get worse as the climate changes, and new research shows that greenhouse gases have a direct effect on aggravating these problems.