You have a preview view of this article while we are checking your access. When we have confirmed access, the full article content will load.A.I. Needs Copper. It Just Helped to Find Millions of Tons of It.The deposit, in Zambia, could make billions for Silicon Valley, provide minerals for the energy transition and help the United States in its rivalry with China.An exploration site run by KoBold Metals in Chililabombwe, Zambia, in June.Credit...Zinyange Auntony for The New York TimesA.I. Needs ...