Tony Davis

For Star subscribers: The city's top economic official resigned weeks after the city council killed Project Blue, a plan to bring a huge data center complex to Tucson's southeast side.

The Copper World mining project south of Tucson reaped a big financial boost Wednesday: Japan-based Mitsubishi Corp. will invest $600 million towards construction of the complex of six open pits

If Project Blue officials try to build data centers in Marana, they will face much stricter rules in the crucial areas of water, energy and noise than they faced in

Tucson City Councilman Kevin Dahl will introduce a motion Wednesday to kill the proposed Project Blue data-centers complex before the council can seriously consider it.

Tucson Electric Power will convert two of the four coal-fired power generating units at its Springerville power plant to natural gas by 2030, the utility announced Tuesday.

The company did not want its name made public, leading a local business leader to worry it will pull out of the data-centers project. Responds a city councilman, "Let 'em

A university biologist fears Project Blue data centers will need reclaimed water that now runs in the Santa Cruz. Tucson officials say that's false.

Also disclosed for the first time: Project Blue is considering proposing up to two more data-center complexes in the Tucson metro area.

Solar panels that served a private subdivision on Davis-Monthan Air Force Base were torn down at the end of their lifespan, officials say.

For Star subscribers: Excessive methane emissions at Los Reales Landfill were discovered more than a year ago, but city and county officials are still grappling with what to do about