The U.S. Supreme Court is set to hear arguments this week on whether a drug used in Oklahoma's lethal injection mix should be banned in a case that comes as a shortage of execution chemicals has sent some states scrambling for alternatives.
Ash from the Chilean volcano Calbuco, which erupted without warning this week, reached as far as southern Brazil on Saturday and prompted some airlines to cancel flights to the capitals of Chile, Argentina and Uruguay.
Rescuers dug with their bare hands and bodies piled up in Nepal on Sunday after an earthquake devastated the heavily crowded Kathmandu Valley, killing more than 2,200 people, and triggered a deadly avalanche on Mount Everest.
At least five air strikes hit military sites and an area near the presidential palace compound in the Yemeni capital Sanaa at dawn on Sunday while warships pounded an area near the port of the southern city of Aden, residents said.
