by Francois Picard with Chris Lefkow in Washington Agence France Presse HOUSTON, United States (AFP) — Much of the United States was in the icy grip of an “unprecedented” winter storm on Monday as frigid Arctic air sent temperatures plunging, forcing hundreds of flight cancellations, making driving hazardous and leaving millions without power in Texas. Texas Governor Greg Abbott issued a disaster declaration for the southern state, and the National Weather Service (NWS) said […]