News bites: The quiet Keystone?

The Wall Street Journal takes a look at what's behind the reshuffling of chief executives at major oil-and-gas firms.

The Associated Press says hydraulic fracturing, or fracking, likely won't begin in Illinois until next year because the state needs to install rules and hire experts to oversee the drilling method. The state's Legislature approved the practice of fracking within its borders last week, and its governor has promised to sign the bill.

Bloomberg explains that the climate benefits of natural gas are contingent upon plugging leaks of methane, a stronger heat-trapping gas than carbon dioxide, in the production and delivery of the energy source.