Notoriously, Italy is phasing in its changes over an absurdly long period, stretching to the 2030s.

ECONOMIST: State pension systems that mimic private accounts

Those now in their 30s could lose as much as 50% by the time they retire in the 2030s.

ECONOMIST: Austria's government

An energy conference in Darwin on September 19th heard that gas demand in Asia-Pacific could more than double by the 2030s.

ECONOMIST: Australia��s Northern Territory

As for nuclear energy, after changing its position a few times, it has promised to phase it out by the 2030s.

BBC: Business

The figure being quoted is just shy of 3bn euros for a series of spacecraft that would likely operate in the 2020s and 2030s.

BBC: When 'state of the art' is also years old

If the trend continues, Passell says several decades from now, possibly in the late 2030s or early 2040s, the U.S. population will become less than 50% non-Hispanic white.

CNN: Most U.S. children under 1 are minorities, Census says

By the mid-2030s, scientists have predicted that the Arctic will be ice-free for at least one month of every summer, which will expand to two-to-three ice-free months by around mid-century.

FORBES: U.S. Navy Scrambles for Piece of Arctic Pie

Wilson is betting that so-called fracking, the supposed wonder technology that is being touted as a new lease on life for fossil fuels, will have burnt itself out by the 2030s.

FORBES: Is This the Bill Gates of Energy?: Meet Nuclear Entrepreneur Taylor Wilson (18)

Chris Moore, NASA's deputy director for advanced exploration systems, said the space agency is working on engines aimed at cutting the trip time by the 2030s, when it hopes to send humans to Mars.

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In theory, by delegating to the private sector the humdrum business of ferrying food and astronauts to and from low-Earth orbit, NASA hopes to free up cash to do other, more difficult things, including sending people to nearby asteroids by 2025, and on to Mars by the 2030s.

ECONOMIST: SpaceX goes to the ISS