Give Obama credit for at least knowing that the U.S. has to begin building new nuclear plants into its energy mix: US energy chief: don't delay new nuclear plants Regulators should press ahead with approving construction licenses for new nuclear power plants despite Japan's nuclear crisis, President Barack Obama's top energy official said Tuesday. Energy Secretary Steven Chu told a House panel that "the American people should have full confidence that the United States has rigorous safety regulations in place to ensure that our nuclear power is generated safely and responsibly." But he said that the administration "is committed to learning from Japan's experience." Chu told reporters on Capitol Hill that he thought construction license applications pending at the U.S. Nuclear Regulatory Commission could proceed. Meanwhile in the nuclear calamity of the day, BBC is reporting AFP/AP/Reuters reporting a new fire at reactor 4: # 2157: Tepco says efforts are underway to tackle the fire inside the building which houses the number four reactor, Reuters reports. # 2153: Flames are rising from the reactor, AP reports. # 2152: AFP is reporting a new fire at the number four reactor at the Fukushima Daiichi nuclear plant.