"WASHINGTON -- Five years before a train loaded with crude oil derailed and exploded last year in Quebec, killing 47 people, another derailment in Oklahoma should have given federal regulators an early warning that the type of oil both trains carried was more flammable than authorities realized."

"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."

"National standards should be set for building construction, storm shelters and emergency communications to reduce death and damage from tornados, a federal agency that studied the deadly 2011 tornado in Joplin, Missouri, recommended on Thursday."

"WASHINGTON -- Only blocks away, the Energy Department manages the search for quarks and NASA scours the heavens for Earth-like planets. But inside a big white tent on the National Mall, the focus is on something simpler: oak, ash and elm, and how to make them heat a house with as little pollution as possible."

"This year’s World Food Prize laureates called on a hungry world to embrace the seeds they helped develop, despite controversy that threatens to limit the reach of biotech crops."

"Three researchers who played prominent roles in developing genetically modified crops — Mary-Dell Chilton of Syngenta, Robert T. Fraley of Monsanto and Marc Van Montagu of Belgium — were awarded the World Food Prize on Thursday at the Iowa Capitol. The music- and history-filled ceremony highlighted the prize’s biggest and most controversial week yet."

"When it snowed in Flagstaff, Ariz., recently, thousands of people woke up and turned up their electric heating, and Arizona Public Service saw electricity demand reach a morning peak. To meet the demand, the company used the previous afternoon’s sunshine."

"Legislators on the island of Kauai in Hawaii have approved a bill that would restrict the use of pesticides by companies developing genetically modified crops there."

"Leigh Peterson has one of the coolest roofs in Baltimore. Her rowhouse near Patterson Park sports a blinding white cap, topped by a row of shiny solar panels."

"When senior scientist Walter Tamosaitis warned in 2011 about fundamental design flaws at the nation's largest facility to treat radioactive waste in Hanford, Wash., he was assigned to work in a basement room without office furniture or a telephone. On Wednesday, Tamosaitis, an employee of San Francisco-based URS Corp., was laid off from his job after 44 years with the company."