These 76 Women Scientists Are Changing the World

EcoWatch - Heidi Steltzer's job, as she put it, is "hiking where no one else will go." As a mountain and polar ecologist studying rare plants, she's accustomed to traveling to breathtaking Arctic vistas to chase flora along mountain ridges.

The problem of female leadership in STEM isn't a new one. When Katharine Hayhoe, director of the Climate Science Center at Texas Tech University and a leading U.S. climate voice, was a second-year undergraduate physics student, the head of the department called her into his office to ask how the program could help encourage her career as a female physicist.

"My mentors in science from day one have all been male," she recalled. "I've learned a lot from them and I've been incredibly encouraged and supported by them. But at the same time, there have been differences between us."

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