Three years into a statewide drought, Californians are ready for some rain. That includes utilities, whose hydropower production depends on runoff from the mountains. To keep the water flowing, Pacific Gas & Electric is expanding an age-old technology that some doubt even works: cloud-seeding. [Corrections: In the original broadcast of this story, and in the version available here in this online archive, we erred in identifying the location of the seeding. PG&E, the utility planning the project, brought to our attention that the target area is in the Pit-McCloud watershed "well east of Mount Shasta." We also characterized cloud seeding as a tool the company is reviving. PG&E says that it has used cloud seeding steadily for 50 years now, but this is the first time it's planned for this particular area.]
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