In his State of the Union speech, President Obama called for more domestic oil and gas production, saying that "a future where we're in control of our own energy" is within reach, where the nation's security and prosperity would not be so closely linked to unstable parts of the world.
Researchers found that children whose blood contained high levels of chemicals used in nonstick coatings and stain-resistant fabrics were less responsive to vaccination. The finding suggests, but doesn't prove, that these chemicals may make some children more vulnerable to infectious diseases.
California became the only state to implement greenhouse gas emission controls in January 2012, but the debate there over climate change continues. University of California history and science professor Naomi Oreskes says the time for bickering over whether or not climate change is real is over.
Bad weather moved across the South Sunday night and into Monday morning. Tornadoes were reported in Alabama, Arkansas and Tennessee. In Alabama, some of the worst damage occurred in areas that had already been hit by heavy storms before.
President Obama rejected Wednesday a proposal to build the Keystone XL oil pipeline from Canada to the U.S. Gulf Coast — generating intense debate in both countries. Murray Mandryk, political columnist for the Leader-Post of Sasketchewan, offers a Canadian perspective on the controversy.
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