AUSTIN, Texas — Gov. Greg Abbott has ordered Texas and U.S. flags to be flown at half-staff statewide in honor of Carole Keeton, a trailblazing leader and longtime public servant who died this week.

NEW YORK/HOUSTON, March 27 (Reuters) - U.S. oil producers are grappling with geological limits to production growth as the country's top oilfield ages and produces more water and gas and less oil ...