This is a vast challenge, and it is worth bearing in mind that mankind's contribution to warming is the only factor that can be controlled.

ECONOMIST: Blowing hot and cold

Brazil is now seeing a growing inflation problem that can only be controlled by higher interest rates, proving, once and for all, that the level of the benchmark Selic rate has not been politicized to the point of immobility, says Tony Volpon, head of emerging markets Americas at Nomura Securities in New York.

FORBES: A Brazil Rate Hike, Sooner Rather Than Later

The migration of physicians into large, regulated entities is essential if the practice of medicine is going to be transformed into the corporatist-government model that is the only way health-care costs can be controlled.

WSJ: David Leffell: The Doctor's Office as Union Shop

" A remarkably comfortable drive, too: "It can be controlled with only two fingers on the wheel.

FORBES: Magazine Article

Roger Linfield and his colleagues at the Jet Propulsion Laboratory in Pasadena, California, who are in charge of the mission, aim to show that spacecraft flying in formation can be controlled so precisely that the distance between them varies by only a tiny fraction of a wavelength of light.

ECONOMIST: Birds of a feather