Each of the National Parks faces unique challenges from climate change, including increased heat.
April 2016 was the hottest April on record globally.
Temperatures we think of as normal are getting warmer.
If the first three months of 2016 are any indication, meeting the 1.5°C challenge will be increasingly difficult.
The rapidly warming Arctic is already impacting Alaska, as earlier ice breakups on the Tanana River are more likely.
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.
A new report constructs a sea level timeline going way back. Hard to miss the human influence in the 20th century.