"American oil and gas companies have gone heavily into debt during the energy boom, increasing their borrowings by 55% since 2010, to almost $200 billion."

"California broke ground Tuesday on its $68 billion high-speed rail system, promising to combat global warming while whisking travelers between Los Angeles and San Francisco in less than three hours."

"In an inaugural address drawing on his family's deep roots in California, Gov. Jerry Brown called for expansive new environmental regulations that would protect the state for future generations."

"The White House issued a veto threat Tuesday for pending legislation intended to force federal approval of the Keystone XL pipeline."

"Streams of oil slid into the bayous of southeastern Louisiana after the Deepwater Horizon explosion in 2010, damaging the marsh grasses, the wildlife and the livelihood of the 17,000-member Houma tribe."

"Solar energy had a banner year in 2014, but as more U.S. households make their own electricity, they're paying electric utilities less. Utility companies across the nation are fighting back."

"Supporters of a bill to approve the Keystone XL pipeline lack the votes to overcome a potential presidential veto and will seek changes during debate to pick up Democratic support, a key Republican lawmaker said."

"Oil prices tumbled below $50 a barrel on Monday, spooking global financial markets and signaling that the remarkable 50 percent price drop since June was continuing this year and even quickening."

"LONGMONT, Colo. — This northern Colorado city vaulted onto the front lines of the battle over oil and gas drilling two years ago, when residents voted to ban hydraulic fracturing from their grassy open spaces and a snow-fed reservoir where anglers catch smallmouth bass."

"As of January 1, 2015 single-hull oil tankers are no longer allowed in U.S. waters."