Author: Elizabeth Weise and Doyle Rice, USA TODAY

Canada’s wildfires are bigger than they used to be, and experts say they’re set to get even worse. That will keep impacting US air for years.

The size, ferocity and number of wildfires this year in Canada is decidedly abnormal. The smoke is now affecting US weather.

Climate scientists say this is only the beginning of what will be decades of increasingly dangerous and damaging extreme weather.