"At a remote research center on the Nebraska plains, scientists are using surgery and breeding techniques to re-engineer the farm animal to fit the needs of the 21st-century meat industry. The potential benefits are huge: animals that produce more offspring, yield more meat and cost less to raise."

"The Senate on Tuesday overwhelmingly approved an amendment to the Keystone XL pipeline bill that is aimed at improving energy efficiency in buildings — a rare moment of bipartisan agreement in a tense debate that is nowhere near being settled."

"If you’re in the market for a paint remover and head to your local hardware store, most of the products you’re likely to find will contain methylene chloride."

"With natural gas drilling on the horizon in Western Maryland, dairy farmer Billy Bishoff welcomes the chance to supplement his income by collecting lease or royalty payments on the natural gas that lies beneath his family's 330 acres a few miles northwest of Deep Creek Lake."

"India’s tiger population has rebounded, growing more than 30 percent over the last four years to 2,226, according to a new government census released on Tuesday."

"Oil services company Baker Hughes Inc. will lay off about 7,000 workers as it prepares for a downturn in orders because of the plunge in crude prices, the company said Tuesday."

"The Canadian company that wants to build the Keystone XL pipeline took legal action Tuesday to secure remaining right of way from a group of holdout Nebraska landowners."

"'No challenge – no challenge – poses a greater threat to future generations than climate change,' President Barack Obama said to applause during his sixth State of the Union Address, delivered tonight to a joint session of Congress."