US Energy Secretary Steven Chu and US Commerce Secretary Gary Locke are in China. They're meeting with their Chinese counterparts to discuss combating global warming. The World's Mary Kay Magistad reports.
Marco Werman talks with Robert Kaufmann, director of the Center for Energy and Environmental Studies at Boston U, about the new technologies which are helping the oil industry search for oil in many areas once considered too difficult.
China is attempting a delicate balancing act - trying to mediate the explosive dispute between Sudan and the newly independent nation of South Sudan. As The World's Mary Kay Magistad explains to host Marco Werman.
About a quarter of all people worldwide live without electricity. For them, evenings and nights are spent by candlelight or kerosene lamp. But a group of scientists in Sri Lanka say they have found a creative way to bring simple electric lighting to rural households.