Dynastic leaders consolidating territory and developing China's economy exploited the country's natural resources in ways that contributed to famines and natural disasters, writes CFR's Elizabeth Economy in The River Runs Black: The Environmental Challenge to China's Future.
Credit Julio Cortez/Associated Press. 1  United Airlines flights were grounded Tuesday morning because of an unidentified computer problem, leading to widespread delays. 2  The airline said it began delaying all flights at 9 a.m. 3  United said the ground stop affected about 150 flights, or 8 percent of its morning schedule.
United Airlines has a 24-hour flexible booking policy that allows for a full refund of the fare if a ticket is cancelled or changed within 24 hours of booking. For example, if you book a ticket on United at 8 p.m., you have until 8 p.m. the next day to cancel the ticket and get a full refund.Under this policy, you can also make changes to your flights within 24 hours of booking and not pay a change fee.or example, if you book a ticket on United at 8 p.m., you have until 8 p.m. the next day to cancel the ticket and get a full refund. Under this policy, you can also make changes to your flights within 24 hours of booking and not pay a change fee.