• BP concedes its oil spill estimate is wrong.
• Regulators tell BP to switch spill chemicals.
• Lower oil spill estimate could save BP money in court.
• Key well cement tests never done on spilling well, says Schlumberger.
• Industry panel makes recommendations for better drilling safety.
• BP has fallen short on transparency, say federal officials.
• Shareholder lawsuit filed against BP in Alaska.
• Kerry and Pickens bury the hatchet, agree on climate issues.
• DOE taps French co. for nuclear enrichment plant.
• Patent office will do more expedited reviews of ‘green tech.”
