The co-chairmen of a presidential commission probing the BP oil spill did not ask any probing questions of the one BP exec to testify at the panel's first hearing Monday.

"The Coast Guard has modified a policy on safety zones around boom deployed on oiled coastlines, a policy news organizations had said unnecessarily restricted coverage of the impact of the Gulf of Mexico oil spill and efforts to clean it up."

"Interior Secretary Ken Salazar  issued revised rules on Monday for a six-month moratorium on deepwater oil  drilling in the Gulf of Mexico, replacing an earlier one that had been declared invalid by federal courts."

"For environmentalists, the BP oil spill may be disproving the maxim that great tragedies produce great change."

"The presidential commission appointed to study the causes of the BP Deepwater Horizon oil spill and to recommend improvements for offshore drilling has navigated tight spots as it prepares to begin work this week."

"A tiny insect is literally sucking the life out of hemlock trees in the Eastern United States. The hemlock wooly adelgid was first spotted in Virginia in the 1950s. Since then it's hit roughly half the hemlocks from Georgia to Massachusetts."

"They may not be the 500-pound 'Frankenfish' that some researchers were talking about 10 years ago, but a Massachusetts company says it's on the verge of receiving federal approval to market a quick-growing Atlantic salmon that's been genetically modified with help from a Pacific Chinook salmon."

"Last March, President Obama promised he'd have a strategy for restoring scientific integrity to the federal government on hand by July 29. A full year later, federal agencies still have not received any new directives and some government scientists say that conditions have not improved noticeably since Obama took power."

"The amount of plutonium buried at the Hanford Nuclear Reservation in Washington State is nearly three times what the federal government previously reported, a new analysis indicates, suggesting that a cleanup to protect future generations will be far more challenging than planners had assumed."