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. The world’s largest tech companies have a problem: Their data centers for artificial intelligence require a lot of energy, which is in short supply. So these companies are on the hunt for new sources of electricity, specifically clean energy to meet their own sustainability goals and local mandates. One Everett-based startup, Helion, is aiming at a nuclear solution: not traditional nuclear fission power, but fusion, the power of the stars.…