As the cold spell that froze much of the United States thaws, don’t count on it to limit the populations of pests that you don’t like.
With climate change warming the Arctic air, researchers say, cold snaps are getting warmer. The recent spell of cold was an outlier.
Fears of “Killer Aussie Flu” may be exaggerated, but this year’s predominant strain is the most dangerous, and the vaccine is a poor match for it.
Birds that cannot effectively withstand cold snaps are already further south than the continental United States.