The race to build the best artificial intelligence products is resulting in a worldwide search for new energy sources to power tech giants’ data centers. Karen Weise, a technology correspondent for The New York Times, describes how these A.I.-specific data centers are more power-intensive and how tech companies are investing in new ways to bring more electricity to the grid.

Trump Asked Point Blank: 'Why Not Provide Ukraine With Air Defenses?'
Speaking to reporters in the Oval Office, President Trump