As large parts of California and the Pacific Northwest are beset by wildfires, the issue of climate change has taken on prominence in the national political conversation. Scientists increasingly point to rising temperatures and extreme dryness as exacerbating wildfires, but what other factors are involved? Science correspondent Miles O’Brien joins William Brangham to discuss.

Stream your PBS favorites with the PBS app: https://to.pbs.org/2Jb8twG
Find more from PBS NewsHour at https://www.pbs.org/newshour
Subscribe to our YouTube channel: https://bit.ly/2HfsCD6

Follow us:
Facebook: http://www.pbs.org/newshour
Twitter: http://www.twitter.com/newshour
Instagram: http://www.instagram.com/newshour

Subscribe:
PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts
Newsletters: https://www.pbs.org/newshour/subscribe