An unprecedented spring heat wave has begun in the Southwest, one that is likely to rewrite the record books and set dozens of new temperature records for March and possibly even April.

Meteorological fall began Monday, but an expanding heat dome has other plans for the Pacific Northwest and the adjacent southwestern Canada. Temperatures are forecast to rise to between 95 and 105 ...

Atlantic Canada was hammered by a drawn out heat wave in August, and one climate scientist says it exacerbated the burning wildfires. Scientists with the federal government shared results on Wednesday ...