A quick scientific study finds that human-caused climate change increased the likelihood and intensity of the hot, dry and windy conditions that fanned the flames of the recent devastating Southern California wildfires.

Here's what experts say is turning Southern California's speedy wildfires into a deadly urban conflagration that is defying the calendar.

The US West is getting hit with a triple whammy of record heat, megadrought and wildfires — and just a handful of numbers explains the how and why of this wild and deadly weather.