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Bloomberg Philanthropies launches its largest Mayors Challenge ever

FILE - Michael Bloomberg prepares to speak at an Earthshot Prize Innovation Camp in London, on June 27, 2024. (AP Photo/Kin Cheung, Pool, File)

FILE - Michael Bloomberg prepares to speak at an Earthshot Prize Innovation Camp in London, on June 27, 2024. (AP Photo/Kin Cheung, Pool, File)

This photo provided by Bloomberg Philanthropies shows vendors selling produce at the Friday Market in Rourkela, India, Feb. 23, 2024. (Bloomberg Philanthropies via AP)

This photo provided by Bloomberg Philanthropies shows vendors selling produce at the Friday Market in Rourkela, India, Feb. 23, 2024. (Bloomberg Philanthropies via AP)