A distinguished American marine biologist has been shot dead by three men who entered his house in the central Philippines, police said on Tuesday. Kent Carpenter, 73, was with his Filipina companion in a house in the coastal town of Sibulan, in Negros Oriental province, on Sunday night when the masked men forced their way in. One drew a gun and shot Carpenter in the head, killing him instantly, police said his companion told them. The men took a laptop, an unspecified amount of cash and a backpack before fleeing, national police spokesperson Col. Allen Rae Co told reporters. Regional...