Michael E. Mann, climate scientist and author of “The Hockey Stick and the Climate Wars: Dispatches from the Front Lines,” must be tired of hearing that the uncharacteristic weather that surprised much of the nation this holiday season wasn’t definitive proof of climate change but rather an effect of El Niño.

Presidential candidate Bernie Sanders might have been in a panic because “nobody can recall a Christmas Eve where the temperature was 65 degrees,” but Mann has a scientific explanation that handily fits inside a tweet.

Now if someone tries to tell you El Niño is the cause of recent weather systems, you’ll know that it’s El Niño combined with human-caused climate change to blame.

“Joint” Nobel laureate and serial blocker.


Especially when it’s nice warm golfing weather and your airplane is named Air Force One.