Climate Lab is a Seattle Times initiative that explores the effects of climate change in the Pacific Northwest and beyond. The project is funded in part by The Bullitt Foundation, CO2 Foundation, Jim and Birte Falconer, Mike and Becky Hughes, Henry M. Jackson Foundation, Martin-Fabert Foundation, Craig McKibben and Sarah Merner, Mary Snapp and Spencer Frazer, University of Washington, Walker Family Foundation and Kristi and Tom Weir, and its fiscal sponsor is the Seattle Foundation. MALAGA, Chelan County — On the banks of the Columbia River, two companies are rushing to build two technologies they say will power the future. Microsoft is constructing a sprawling data center campus that could cover more than 24 football fields, part of the company’s rapid build-out in a global arms race to control artificial intelligence. But this one site could demand as much electricity as a medium-sized city — at a time when power is increasingly scarce.…