"January 1 is the end of the era of your standard, soft white Edison-designed incandescent bulb in the United States. Or at least, in theory."

"FRISCO, Colo. — Massive use of antibiotics for food production is only marginally beneficial and poses a huge long-term risk to human health, researchers in Canada say. In a new paper, the scientists proposed a user fee that could help curb excessive application antibiotics in the agriculture and aquaculture industries."

"Air pollution isn't just an outdoor problem. Unhealthy fumes may be emitted inside your own home if you're cooking over an unvented gas stove."

"WASHINGTON — To stave off climate change, sources of electricity that do not emit carbon will have to replace the ones that do. But at the moment, two of those largest sources, nuclear and wind power, are trying to kill each other off."

"In energy, next year promises to be just as unconventional as the last."

"North America's boom in unconventional oil and gas will continue to expand and the shale success could spread elsewhere. Easy-to-reach conventional oil is dwindling, but 2014 could see a reprieve as production from Iraq, Libya, and other war-torn oil nations seems to be stabilizing. And easing relations with Iran has the potential to bring major amounts of oil back onto global markets.

"One government biologist discovered the best way he could help save polar bears was to quit his job."

"SAN DIEGO — In an unmarked greenhouse, leafy bushes carpet an acre of land here tucked into the suburban sprawl of Southern California. The seeds of the inedible, drought-resistant plants, called jatropha, produce a prize: high-quality oil that can be refined into low-carbon jet fuel or diesel fuel."

"CEDAR FALLS, Iowa — Bounding out of a silver Ford pickup into the single-digit wind-flogged flatness that is Iowa in December, Laura Jackson strode to a thicket of desiccated sticks and plucked a paisley-shaped prize."

"It was a pod that, after a gentle squeeze, burst with chocolate brown buttons: seeds of milkweed, the favored — indeed, the only — food of the monarch butterfly caterpillar.

Once wild and common, milkweed has diminished as cropland expansion has drastically cut grasslands and conservation lands. Diminished too is the iconic monarch."

"SENECA, S.D. — Birds boiled out of the slough 30 yards ahead, brown streaks against a bright blue sky."

"The Department of Energy has reached a deal with environmental and business groups on new energy efficiency standards for cable and satellite television boxes."