As spring blooms, a less rosy trend comes in tandem — the pollen allergies that affect nearly 20 million Americans. The prevalence of allergies has skyrocketed in recent decades. In 1970, about 10 percent of Americans suffered from hay fever, which is caused by airborne allergens like pollen and mold spores; by 2000, 30 percent did…Allergies also affect our economy, costing the U.S. more than $18 billion each year. As the climate warms, the impacts of allergies are expected to rise as growing seasons get longer across the country.

Golly gee. Something else about climate change to look forward to!