Mark Olalde
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Mark Olalde is a reporter at ProPublica covering the environment in the Southwest.
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As it negotiates water rights with tribes, Arizona goes to unique lengths to extract concessions that limit tribes’ opportunities for growth and economic development, according to a ProPublica and High Country News investigation.
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For the first time, ProPublica has cataloged cleanup efforts at the 50-plus sites where uranium was processed to fuel the nation’s nuclear arsenal. Even after regulators say cleanup is complete, polluted water and sickness are often left behind.
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Shell and ExxonMobil are selling their California wells despite oil selling at high prices. Experts say one reason is looming liability for environmental cleanup.
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In a Q&A, experts describe how a new climate reality threatens the Southwest, the fastest-growing region in the U.S.