Expert shares the unsettling reason that spring allergies are getting worse: ‘Spores can more easily enter the lungs’

The Cool Down reports, "As the world gets warmer, the last frost occurs earlier and earlier each spring, and the first frost happens later in the fall, YCC [Yale Climate Connections] explains.

"This means that pollen season — the part of the year when it’s warm enough for plants to produce pollen — gets longer. William Anderegg, an associate professor at the University of Utah, found that pollen season is now beginning about 20 days earlier than it did 30 years ago."

Read more about the extended pollen season.