Many people think that beautiful, blazing sunsets are one upside to living with the smog that hangs over polluted cities. Are they right? Does smog actually enhance sunsets?
Carbon dioxide released from burning fossil fuels is a prime suspect in global warming. Could we mitigate the problem by burying the CO2 deep within the ocean? See more »
What's a good way to make solar power affordable? Find a way to generate more electricity in a smaller area. You can do it -- just concentrate. See more »