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Respiratory therapist Catherine Abee displays her invention, the heat-enhanced pulse oximeter, while in the company of colleagues at the VA Pittsburgh Healthcare System. (Photo credit: Bill George)

Army-funded researchers at Cornell University are using artificial intelligence to search for a catalyst that would allow them to replace hydrogen with methanol to make fuel cells more efficient. (Photo credit: CCDC ARL)

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Construction workers check on progress inside a tunnel on a water infrastructure project in Washington, D.C. (Photo credit: EPA)

USDA Forest Service employees, Maryland Zoo zookeepers, and founder of Hose2Habitat Lisa Daly pose with a “browser,” a braided fire hose used as an enrichment product for animals in zoos and wildlife refuges. From left to right: Sarah Hines - USFS, Julie Grove - Maryland Zoo, Joe Burns - USFS, Lisa Daly - Hose2Habitat, Alistair Small - Maryland Zoo, Jacqueline Emanuel - USFS, Gary Barrett - USFS, Stephen Dombroskie - Maryland Zoo, and Rascal the Laughing Kookaburra. (Photo credit: Sydney Beasley)

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CO2 release by mild heating of the BIG-bicarbonate solid. The released CO2 gas is trapped in the orange balloon, while the released water vapors are trapped by condensation in the ice-cooled U-shaped tube. (Photo credit: Neil J. Williams and Erick Holguin)

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