For the first time in 50 years, Cubans can now buy and sell homes. Here, a Cuban woman stands on the balcony of a dilapidated building earlier this month in Havana.
Credit Franklin Reyes / AP
Antonio Gonzalez repairs the facade of a house in Havana in May. The new law means many property owners are now updating long-neglected buildings. Well-kept single family homes in prime neighborhoods are listed at $100,000 or more.
The U.S. State Department is ordering the developer of a pipeline that would carry oil from western Canada to Texas to reroute it around environmentally sensitive areas of Nebraska.
That means possibly delaying a final U.S. decision until after the 2012 election.
The decision to order Calgary-based TransCanada Corp. to figure out a way around an area that supplies water to eight states will require an environmental review of the new section. That review probably would take at least a year.
Power plants that burn fossil fuels release carbon dioxide as well as a complex soup of chemicals, including nitrogen and sulfur. These chemicals in the air actually help keep global warming in check by reflecting sunlight back into space and by interacting with carbon dioxide. Above, the Bruce Mansfield Power Plant in Shippingport, Pa.
Cleaning up the air, while good for our lungs, could make global warming worse. That conclusion is underscored by a new study, which looks at the pollutants that go up smokestacks along with carbon dioxide.
These pollutants are called aerosols and they include soot as well as compounds of nitrogen and sulfur and other stuff into the air. Natalie Mahowald, a climate researcher at Cornell University, says so far, scientists have mostly tried to understand what those aerosols do while they're actually in the air.