PHOENIX - The ground is 9 degrees hotter at night in Chandler and Gilbert than it was at the turn of the century, as increases in population and development in those areas resulted in changes in land use, according to a 2016 study.
WASHINGTON - President Donald Trump ordered the Interior Department Wednesday to review two decades of national monument designations, actions he said represent an "egregious use of government power" affecting millions of acres of land.
WASHINGTON - Rep. Raul Grijalva, D-Tucson, and the Center for Biological Diversity challenged President Donald Trump's proposed border wall on environmental grounds Wednesday, going to court to force the administration to follow environmental protection laws before starting construction.
WASHINGTON - Phoenix fell from third to fifth place among cities for total installed solar capacity last year, slowed by charges imposed on Arizona solar users at time when other cities surged ahead with new installation.
WASHINGTON - The Environmental Protection Agency was within its rights to impose certain standards on industrial sites in Arizona in place of state rules meant to ensure visibility in federal parks, a federal appeals court ruled.
WASHINGTON - Arizona saw a 6 percent increase in solar jobs in 2016, bouncing back from a sharp drop the year before but still trailing well behind the national average growth of 25 percent in solar jobs.