Later frosts mean longer growing seasons for the U.S.
Climate change is altering important elements affecting fall foliage.
The average number of large wildfires burning across the Western U.S. each year has tripled from the 1970s to the 2010s.
Higher levels of carbon dioxide in the atmosphere lead to a more acidic ocean.
Each of the National Parks faces unique challenges from climate change, including increased heat.
Allergy season is getting longer and worse in a warming world with more carbon dioxide.
An early spring can disrupt plant & animal behaviors and make it more difficult on farming.
On the current greenhouse emissions path, spring may start an average of three weeks earlier by 2100.