"If the importance and complexity of a court case can be established based on the number of lawyers at the lectern, then the battle over the Obama administration greenhouse gas regulations is of epic proportions. When the three interlinked cases are argued over two days at the U.S. Court of Appeals for the District of Columbia Circuit this week, no fewer than 18 different attorneys will advocate for their clients before the three-judge panel."

"TransCanada said Monday that it would reapply for a permit to build the Keystone XL pipeline from Canadian oil sands formations in Alberta to refineries on the Gulf of Mexico, assuring that the fiercely contested project will remain a source of political heat throughout the presidential campaign.

The proposed Keystone XL pipeline for shipping Canadian tar-sands crude to Gulf-Coast terminals and refineries is likely to be a 2012 election issue. But some ranchers see it as an unwelcome invasion of their property.

"DETROIT -- Average retail gas prices in Detroit have risen over 25.6 cents per gallon in the past week. According to GasBuddy.com this compares with the national average that has increased 11.3 cents per gallon in the last week to $3.64/gallon."

"AUSTIN -- The politically volatile Keystone XL pipeline is becoming embroiled in a widening controversy in Texas as supporters tout the promise of jobs and other economic benefits while increasingly vocal opponents say the project would trample property rights and endanger water supplies in East Texas."

"Suspicion is growing among Republican lawmakers that the Defense Department's efforts to move to renewable energy are more about politics than they are about saving lives and boosting security, as officials claim. The Pentagon's green push -- including outfitting Marines and soldiers with solar gear, testing aircraft and ships on biofuels and building renewable power plants at bases -- won supporters from both sides of the aisle over the past year as leaders drew a clear line between the technologies and military might."

"One revelation from the recent Heartland Institute document leak is that the group is crafting a K-12 curriculum to teach kids that global warming is 'controversial.' Heartland officials have confirmed this. So is climate change set to join evolution as the next big classroom controversy?"

"President Barack Obama hit back on Thursday at election-year Republican criticism of his energy policies, offering a staunch defense of his attempts to wean Americans off foreign oil and saying there is no "silver bullet" for high gasoline prices."