SolarCity says it will install solar systems on the roofs of up to 120,000 military homes, with financing coming from Bank of America Merrill Lynch. It's the first time a project of this scale has been launched without the federal government basically co-signing the loan.
As the natural gas industry booms in Pennsylvania, drillers are encountering a hodgepodge of local rules on hydraulic fracturing, or "fracking." State lawmakers are considering changes that would limit the way a local community regulates what happens in its own backyard.
A 2009 White House memorandum protects federal scientists from political interference. But a watchdog group alleges that federal officials allowed politics to affect the design of a scientific study — exactly the sort of abuse the directive was designed to prevent.
Businesses' desire to make sense of vast troves of data means mathematicians are in high demand, creating a recruiting war for talented analysts. DJ Patil, a "big data" expert who now recruits for a venture capital firm, compares raw data to clay: shapeless until molded by a gifted mathematician.
The 1997 treaty was supposed to be a first step toward more ambitious actions on climate change. But it's now on the brink of fading into irrelevance as unified, global actions on climate policy have been almost nonexistent.
Theoretical physicist Michio Kaku describes some of the inventions he thinks will appear in the coming century — including Internet-ready contact lenses, space elevators and driverless cars — in his book Physics of the Future.
Smart electric meters are being installed in homes across the country. The wireless devices replace old meters and transmit electricity usage data wirelessly to utilities. But there are concerns about accuracy and safety. Guy Raz talks to David Baker, energy reporter at the San Francisco Chronicle, for more.
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