C40 Cities launches a pact in London requiring data centers to run on renewable energy, use battery storage and sit on underused land.The agreement asks operators to cut water use, capture waste heat, reduce noise and air pollution, and contribute to local infrastructure and jobs.About half the signatories are US cities, including Seattle, Palo Alto, Phoenix and Albuquerque; Phoenix Mayor Kate Gallego warns pending permits could double electricity demand.Melbourne Lord Mayor
Nicholas Reece highlights risks to drinking supplies, Southeast Asian cities are absent over national policy hurdles, and mayors seek local regulations to prevent a race to the bottom.