The Times pulled data released by the Bureau of Labor Statistics once every two years.

FORBES: Jobs of the Future

He argues is that Apple likes to bring out a truly updated device once every two years.

FORBES: Will The Samsung S4 Launch Drive Apple's Share Price Down?

Once every two years, Mr. Ehrmann, who is 50, organizes a festival, during which artists display new works and hold happenings.

WSJ: French Artist Thrives on Chaos, Neighbors Are Less Enthralled

Abolish Labour's annual NEC elections, instead holding them once every two years.

BBC: Labour row looms on internal polls

For most of his life, Faustino's sole human contact has occurred once every two years, when he herds his cattle to the nearest town to sell.

CNN: The loneliest cowboy in the world

Grayson said that there was a need for the DOL to employ highly trained accountants like the SEC to audit pension investments at least once every two years, as well as the unions themselves to ensure that no conflicts of interests exists.

FORBES: The Growing Scrutiny of Pensions ( August 22, 2005)

Maine shortly afterwards passed a law that requires parties to reach 5% only once every four years instead of every two.

ECONOMIST: Ballot access: Climb every mountain | The

Moreover, guidelines from the American Dental Association state that healthy adults should have a bitewing X-ray no more than once every two or three years, and that there is little reason to X-ray patients who do not have symptoms.

ECONOMIST: Confirmation that dental X-rays can be bad for you

If asteroids as big as DA14 pass close to Earth once every decade or two, and meteors as large as the Chelyabinsk one impact once every 100 years (a similar meteor having caused the Tunguska event in 1908), the chance of both events happening on any one day are indeed very small: 1 in 3, 650 days times 1 in 36, 500 days, or about 1 in 100 million -- not odds you would bet against.

CNN: A meteor and asteroid: 1 in 100 million odds