Mark Olalde

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Mark Olalde is a reporter at ProPublica covering the environment in the Southwest.

The Rising Cost of the Oil Industry’s Slow Death
How Arizona Stands Between Tribes and Their Water
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.
It Will Cost Up To $21.5 Billion To Clean Up California’s Oil Sites. The Industry Won’t Make Enough Money To Pay For It.
The Cold War Legacy Lurking in US Groundwater
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.
Big Oil Companies Are Selling Their Wells. Some Worry Taxpayers Will Pay to Clean Them Up.
Shell and ExxonMobil are selling their California wells despite oil selling at high prices. Experts say one reason is looming liability for environmental cleanup.
drought The Southwest’s Drought and Fires Are a Window to Our Climate Change Future
In a Q&A, experts describe how a new climate reality threatens the Southwest, the fastest-growing region in the U.S.
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