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Dirac Twidwell

University of Nebraska–Lincoln researchers, Dirac Twidwell and Dan Uden, have introduced an approach that could help conservationists and landowners identity early warning signs of ecological transitions in regions such as the Nebraska Sandhills. November 25, 2019. Photo by Craig Chandler / University Communication.

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University of Nebraska–Lincoln researchers, Dirac Twidwell and Dan Uden, have introduced an approach that could help conservationists and landowners identity early warning signs of ecological transitions in regions such as the Nebraska Sandhills. November 25, 2019. Photo by Craig Chandler / University Communication.

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University of Nebraska–Lincoln researchers, Dirac Twidwell and Dan Uden, have introduced an approach that could help conservationists and landowners identity early warning signs of ecological transitions in regions such as the Nebraska Sandhills. November 25, 2019. Photo by Craig Chandler / University Communication.

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From left: Craig Allen, Simanti Banerjee, Dirac Twidwell and Daniel Uden are researching regional environmental change with the help of an NSF grant. The grant will develop resilience informatics screening tools for more advanced and earlier detection of vegetation transitions. September 18, 2019. Photo by Craig Chandler / University Communication.

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University of Nebraska-Lincoln researchers (green shirt) Caleb Roberts, (black shirt) Craig Allen and (white shirt) Dirac Twidwell have found evidence that multiple ecosystems in the U.S. Great Plains have moved substantially northward during the past 50 years due to warmer climates. June 13, 2019. Photo by Craig Chandler / University Communication.

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University of Nebraska-Lincoln researchers (green shirt) Caleb Roberts, (black shirt) Craig Allen and (white shirt) Dirac Twidwell have found evidence that multiple ecosystems in the U.S. Great Plains have moved substantially northward during the past 50 years due to warmer climates. June 13, 2019. Photo by Craig Chandler / University Communication.

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Cary Savage (center), director of Nebraska's Center for Brain, Biology and Behavior, listens to a question from Eric Olson of the Associated Press.
Research Media Day held in Nebraska Athletic Performance Lab in east stadium. April 8, 2019. Photo by Craig Chandler / University Communication.

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Dirac Twidwell, associate professor for Agronomy and Horticulture, and courtesy assistant professor for the School of Natural Resources.
Photo for the 2018 publication of the Strategic Discussions for Nebraska magazine. April 30, 2018. Photo by Greg Nathan, University Communication.

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Dirac Twidwell, associate professor for Agronomy and Horticulture, and courtesy assistant professor for the School of Natural Resources.
Photo for the 2018 publication of the Strategic Discussions for Nebraska magazine. April 30, 2018. Photo by Greg Nathan, University Communication.

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Controlled burn at the Homestead National Monument in Beatrice, NE. Sebastian Elbaum and Carrick Detweiler have engineered a drone able to light controlled prairie burns using balls dropped from the sky. The drone injects a liquid into the plastic spheres to start a delayed fiery process so the balls can fall to the ground before igniting. Elbaum and Detweiler are Professors of computer science and engineering. Twidwell is an assistant professor and range land ecologist in the school of natural resources. April 22, 2015. Photo by Craig Chandler / University Communications

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Professor Carrick Detweiler snatches the drone in mid air after it’s last flight as Professor Dirac Twidwell looks on. UNL researchers use a small drone to set prairie burn at Homestead National Monument in Beatrice, NE. April 22, 2016. Photo by Craig Chandler / University Communications

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Controlled burn at the Homestead National Monument in Beatrice, NE. Sebastian Elbaum and Carrick Detweiler have engineered a drone able to light controlled prairie burns using balls dropped from the sky. The drone injects a liquid into the plastic spheres to start a delayed fiery process so the balls can fall to the ground before igniting. Elbaum and Detweiler are Professors of computer science and engineering. Twidwell is an assistant professor and range land ecologist in the school of natural resources. April 22, 2015. Photo by Craig Chandler / University Communications

160422 Fire Drone 686

Controlled burn at the Homestead National Monument in Beatrice, NE. Sebastian Elbaum and Carrick Detweiler have engineered a drone able to light controlled prairie burns using balls dropped from the sky. The drone injects a liquid into the plastic spheres to start a delayed fiery process so the balls can fall to the ground before igniting. Elbaum and Detweiler are Professors of computer science and engineering. Twidwell is an assistant professor and range land ecologist in the school of natural resources. April 22, 2015. Photo by Craig Chandler / University Communications

160422 Fire Drone 667

Controlled burn at the Homestead National Monument in Beatrice, NE. Sebastian Elbaum and Carrick Detweiler have engineered a drone able to light controlled prairie burns using balls dropped from the sky. The drone injects a liquid into the plastic spheres to start a delayed fiery process so the balls can fall to the ground before igniting. Elbaum and Detweiler are Professors of computer science and engineering. Twidwell is an assistant professor and range land ecologist in the school of natural resources. April 22, 2015. Photo by Craig Chandler / University Communications

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Controlled burn at the Homestead National Monument in Beatrice, NE. Sebastian Elbaum and Carrick Detweiler have engineered a drone able to light controlled prairie burns using balls dropped from the sky. The drone injects a liquid into the plastic spheres to start a delayed fiery process so the balls can fall to the ground before igniting. Elbaum and Detweiler are Professors of computer science and engineering. Twidwell is an assistant professor and range land ecologist in the school of natural resources. April 22, 2015. Photo by Craig Chandler / University Communications

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Controlled burn at the Homestead National Monument in Beatrice, NE. Sebastian Elbaum and Carrick Detweiler have engineered a drone able to light controlled prairie burns using balls dropped from the sky. The drone injects a liquid into the plastic spheres to start a delayed fiery process so the balls can fall to the ground before igniting. Elbaum and Detweiler are Professors of computer science and engineering. Twidwell is an assistant professor and range land ecologist in the school of natural resources. April 22, 2015. Photo by Craig Chandler / University Communications

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Sebastian Elbaum checks over the tube of balls before the drone takes off. Controlled burn at the Homestead National Monument in Beatrice, NE. Sebastian Elbaum and Carrick Detweiler have engineered a drone able to light controlled prairie burns using balls dropped from the sky. The drone injects a liquid into the plastic spheres to start a delayed fiery process so the balls can fall to the ground before igniting. Elbaum and Detweiler are Professors of computer science and engineering. Twidwell is an assistant professor and range land ecologist in the school of natural resources. April 22, 2015. Photo by Craig Chandler / University Communications

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As the edge burn smokes in the background, the drone's payload is loaded onto the drone for a flight into the center of the fire area. Controlled burn at the Homestead National Monument in Beatrice, NE. Sebastian Elbaum and Carrick Detweiler have engineered a drone able to light controlled prairie burns using balls dropped from the sky. The drone injects a liquid into the plastic spheres to start a delayed fiery process so the balls can fall to the ground before igniting. Elbaum and Detweiler are Professors of computer science and engineering. Twidwell is an assistant professor and range land ecologist in the school of natural resources. April 22, 2015. Photo by Craig Chandler / University Communications

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Liquid is reloaded into the drone's platform so another flight can take off. Controlled burn at the Homestead National Monument in Beatrice, NE. Sebastian Elbaum and Carrick Detweiler have engineered a drone able to light controlled prairie burns using balls dropped from the sky. The drone injects a liquid into the plastic spheres to start a delayed fiery process so the balls can fall to the ground before igniting. Elbaum and Detweiler are Professors of computer science and engineering. Twidwell is an assistant professor and range land ecologist in the school of natural resources. April 22, 2015. Photo by Craig Chandler / University Communications

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Controlled burn at the Homestead National Monument in Beatrice, NE. Sebastian Elbaum and Carrick Detweiler have engineered a drone able to light controlled prairie burns using balls dropped from the sky. The drone injects a liquid into the plastic spheres to start a delayed fiery process so the balls can fall to the ground before igniting. Elbaum and Detweiler are Professors of computer science and engineering. Twidwell is an assistant professor and range land ecologist in the school of natural resources. April 22, 2015. Photo by Craig Chandler / University Communications

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Professor Carrick Detweiler describes to the media how the drone will drop a small ball to start the burn. The ball has a chemical powder in it and while airborne, the drone will inject a second chemical. The drone then drops the ball and it bursts into flames within 60 seconds. UNL researchers use a small drone to set prairie burn at Homestead National Monument in Beatrice, NE. April 22, 2016. Photo by Craig Chandler / University Communications

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Carrick Detweiler, left, Dirac Twidwell and Sebastian Elbaum before the controlled burn. Controlled burn at the Homestead National Monument in Beatrice, NE. Sebastian Elbaum and Carrick Detweiler have engineered a drone able to light controlled prairie burns using balls dropped from the sky. The drone injects a liquid into the plastic spheres to start a delayed fiery process so the balls can fall to the ground before igniting. Elbaum and Detweiler are Professors of computer science and engineering. Twidwell is an assistant professor and range land ecologist in the school of natural resources. April 22, 2015. Photo by Craig Chandler / University Communications

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Dirac Twidwell, left, Sebastian Elbaum, and Carrick Detweiler are on fire with their new patent for setting range fires with small drones. The drone injects a liquid into plastic spheres to start a delayed fiery process so the balls can fall to the ground before igniting. Elbaum and Detweiler are professors of computer science and engineering. Twidwell is an assistant professor and gangland ecologist in the school of natural resources. October 29, 2015. Photo by Craig Chandler / University Communications

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Sebastian Elbaum, left, Dirac Twidwell and Carrick Detweiler are on fire with their new patent for setting range fires with small drones. Elbaum and Detweiler hold flaming table tennis ball similar to the ones carried by the drone flying above them. The drone injects a liquid into the plastic spheres to start a delayed fiery process so the balls can fall to the ground before igniting. Elbaum and Detweiler are professors of computer science and engineering. Twidwell is an assistant professor and gangland ecologist in the school of natural resources. October 29, 2015. Photo by Craig Chandler / University Communications

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All photos are available to UNL departments at no charge. Email the titles of the photos to Craig Chandler or Monica Myers.

cchandler2@unl.edu
mmyers2@unl.edu

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