ASU Professor Robert Balling reviews climate data in his Tempe office on Thursday, Dec. 5, 2019.
Cloud-to-ground lightning branches toward the ground near Three Points, Arizona on Aug, 22, 2019.
A shelf cloud, the leading edge of a cluster of strong storms, races across the desert near Centennial, Arizona, on Saturday, Oct. 13, 2018.
Lightning-illuminated shelf cloud move across Quartzsite, Arizona, early in the morning on Saturday, Oct. 13, 2018.
Lightning fills the sky behind Roosevelt Point in downtown Phoenix, Arizona, on Monday, Sept. 3, 2018.
People walk along Forest Avenue in Tempe, Arizona, while a thunderstorm fills the sky on Friday, Aug. 3, 2017.
People walk along Forest Avenue in Tempe, Arizona, while a thunderstorm fills the sky on Aug. 3, 2017.
GOP protesters chant and hold signs outside the Original ChopShop in Tempe, Arizona, where a political activist spoke on Friday, Aug. 17, 2018.
Tom Steyer speaks to NextGen organizers on Friday, August 17, while protestors from the local GOP shout and brandish signs at Original ChopShop in Tempe.
Two people walk through the Interdisciplinary Science and Technology Building IV in Tempe, Arizona, on Wednesday, April 25, 2018.
ASU assistant research professor Lauren Keeler poses for a photograph in her office in Tempe, Arizona, on Friday, March 16, 2018.
ASU assistant research professor Lauren Keeler poses for a photograph in her office in Tempe, Arizona on Friday, March 16, 2018. Keeler designed workshops and a public forum to help Tempe with their new sustainability goals.
ASU geographical science professor Randall Cerveny poses for a photograph in his office in Tempe, Arizona on Wednesday, Sept. 20, 2017.
ASU professor of geographical sciences and urban planning Michael Kuby poses for a photo in his office on Thursday, Aug. 24, 2017.
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