As climate change stokes polluting fires, southern California's most vulnerable are being hit the hardest.
Warming temperatures combined with drought conditions are major factors for the increase in wildfires.
Smoke pollution is leading to serious public health impacts as large wildfires across the American West become more frequent and destructive.
As climate change fuels large wildfires, the pollution they're releasing is making Americans sick and undermining decades of progress in cleaning the air.
Attribution science is tricky, but hurricanes are fueled by warmer waters.
This September, Brazil saw more fires burning than any month on record.
While Harvey was the most damaging weather event this summer, there were other extremes in the U.S.
See how the summer temperatures and rainfall compared to normal this year in these cities.