One year after the Deepwater Horizon blow-out began the worst oil spill in US history, scientists continue to investigate the effects of the oil and its residues.
Senate Republicans have blocked subpoena power for President Obama's oil spill commission. The commission's chief counsel will push for it again, arguing it's needed to learn the truth about the Deepwater Horizon rig.
The presidential commission investigating the April 20 explosion of the Deepwater Horizon oil rig in the Gulf of Mexico cited a misread test as one likely cause of the disaster.
While Arizona's anti-immigrant law gets all the attention, countries around the world are pursuing tough immigration polices on a scale rarely seen in history.
A presidential commission assessing the US response to the Gulf oil spill identifies flaws in the White House reaction. It finds that the government acted at times either incompetently or without candor.
Mexican drug cartels are assaulting the press, and so journalists are banding together to ask the Mexican government for protection.
On eve of the global warming summit in Copenhagen, Denmark, an informal global survey shows that public interest in the issue is waning. But many people are taking individual steps to curb global warming.