Why didn't the US Minerals Management Service require that Big Oil install secondary blowout preventers on oil rigs, as other countries have? Congress is investigating this and other issues.
BP has failed to manually shut the blowout preventer, and it could take three months to drill a relief well. Before then, BP will try to put a giant hood over the leaking wellhead, or perhaps even install a second preventer. But no short-term options have a proven track record to stop an oil spill.
The oil spill in the Gulf of Mexico has tripled in size in 24 hours. Company officials remain confident that they can contain it before it hits land, but environmentalists are increasingly doubtful.
The Deepwater Horizon oil rig explosion comes three weeks after the Obama administration proposed opening up parts of the Gulf for deepwater exploration. Two Democratic senators are raising broader safety concerns.
Several surveys suggest that since the Toyota recall, the automaker has fallen sharply in customer esteem.
Internal e-mails at Toyota suggest a reluctance to address sudden acceleration. The documents come to light at a time when Toyota is trying to rebuild its image.
A death penalty attorney writes with candor about the painful burdens of his job.
While movements like the tea party have fervor and anger, historians caution that such groups can quickly lose momentum and influence.
Houston is banking on its strong ties to the global marketplace and renewable energy to move beyond the oil age.