Guardian: The US coastguard says BP has managed to cap one of three leaks from its stricken deepwater oil well, but the work is not expected to reduce the overall flow of oil into the Gulf of Mexico. The work should reduce the number of leak points that need to be fixed on the ocean floor, making it easier to drop a containment dome to bottle up the disastrous oil spill threatening sealife and livelihoods along the Gulf Coast. Since an explosion on 20 April, 50 miles off the coast of …