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Episode of Desert Speaks

Of Drought And Fire

Season 16, Episode 12 of 13
More from this Series

Within the last three decades there have been large wildfires consuming the forests in nearly all the mountain ranges above the desert southwest. Just below the ranges, the lack of rains combined with invasive species has caused additional wildfires that have devastated portions of the Sonoran Desert. The link between drought and fire has pre-historic roots and host David Yetman and Tom Swetnam from the University of Arizona's Laboratory of Tree-Ring Research travel through the desert to higher elevations that contain evidence of drought, fire, and civilization. There is evidence that droughts drove early civilizations out of their dwellings on the Colorado Plateau and forced them to move nearer to the Rio Grande River. Yetman also ventures through a dog-hair thicket that has become dangerous because of previous land management practices and the lack of regular fire to regulate its growth. Additionally featured in this episode is a hike through Organ Pipe Cactus National Monument to see how scientists study the adaptability of desert plants to long-term and short-term droughts.

Previously Aired

day time channel
9/6/2012 10:30 p.m. Ready TV
9/7/2012 5:30 a.m. Ready TV
11/28/2012 10:30 p.m. Ready TV
8/19/2013 10:30 p.m. Ready TV
8/20/2013 5:30 a.m. Ready TV
8/29/2014 6:30 p.m. PBS 6
8/29/2014 11 p.m. UA Channel
8/29/2014 11:30 p.m. World
9/1/2014 6 a.m. UA Channel
1/26/2015 6:30 p.m. PBS 6
1/26/2015 11 p.m. UA Channel
1/26/2015 11:30 p.m. World
1/27/2015 PBS 6
1/27/2015 6 a.m. UA Channel
10/15/2015 6:30 p.m. PBS 6
10/15/2015 11 p.m. UA Channel
10/15/2015 11:30 p.m. World
10/16/2015 PBS 6
10/16/2015 6 a.m. UA Channel
6/20/2016 6:30 p.m. PBS 6
6/20/2016 11 p.m. UA Channel
6/20/2016 11:30 p.m. World
6/21/2016 6 a.m. UA Channel

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