"We’ve begun to expect unusual flavors like chili, salt, and lavender in chocolate. But there might be another surprising addition to your Valentine’s Day sweets: heavy metals."

"Apple Inc's deal to buy nearly $1 billion of power from a massive First Solar Inc plant could be the first of a stampede of contracts driven by the looming change in a solar tax incentive that makes such projects particularly attractive."

"Hoping to stem illegal wildlife trafficking, the Obama administration on Wednesday introduced an aggressive plan for taking on traffickers that will include using American intelligence agencies to track and target those who benefit from the estimated $20-billion-a-year market."

"The U.S. Surgeon General lists 21 deadly diseases that are caused by smoking. Now, a study in this week's New England Journal of Medicine points to more than a dozen other diseases that apparently add to the tobacco death toll."

"Entrepreneur Elon Musk’s SpaceX blasted a government weather satellite into orbit on Wednesday, but the company called off its much anticipated attempt at landing the rocket on an ocean barge."

"The House on Wednesday passed a bill approving construction of the Keystone XL oil pipeline, setting up a confrontation with President Obama, who has vowed to veto the measure."

"The Fish and Wildlife Service advised its fellow land management agencies to impose the most stringent protections on roughly 16.5 million acres of high-value sage grouse habitat in order to save the bird from the threat of extinction."

"House Republicans released the outline of a broad energy bill Feb. 9 and vowed to bring the measure to the floor later this year, according to a document released by the Energy and Commerce Committee."

"With the planet facing potentially severe impacts from global warming in coming decades, a government-sponsored scientific panel on Tuesday called for more research on geoengineering — technologies to deliberately intervene in nature to counter climate change."

"For West Coast commercial fishermen and seafood lovers, there is reason to cheer. Rockfish, a genus of more than 100 tasty species depleted decades ago by excessive fishing, have rebounded from extreme low numbers in the 1990s."