The United States said Thursday it would provide another $30 million in flood aid to Pakistan, hoping to reach nearly two million additional people after the historic disaster. The US Agency for International Development said the new aid would include emergency food and nutrition, screening for malnutrition, shelter assistance and kits to help families prepare for winter. USAID chief Samantha Power, who visited Pakistan last month, said she had seen a “sunken world” from the floods which killed more than 1,700 people and 1.2 million livestock and at their height submerged one-third of the coun…