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

TRAVERSE CITY — Construction of the Enbridge Line 5 tunnel under the Straits of Mackinac could begin early next year if the project clears two remaining regulatory hurdles, according to company ...

New Delhi: The Delhi Metro Rail Corporation (DMRC) completed the construction of an underground tunnel between Kishangarh and Vasant Kunj Station on t.

Researchers say holes in the clay that overlays the Memphis aquifer could have let pollutants from as early as the 1940s into the groundwater.