By the end of this century, Spring pollen emissions could begin 40 days earlier.

By the end of this century, Spring pollen emissions could begin 40 days earlier, making the allergy season even longer and more intense. People who have allergies could see the season last an additional 19 days, before high pollen counts subside. Scientists developed a model that examines 15 of the ...This is an NSF Multimedia Gallery item.
Source: NSF Multimedia Gallery - Category: Science Source Type: video