Taking all these things together the burial of the charcoal and the substitution for fossil fuels of the heat, gas and oil produced by its manufacture Johannes Lehmann of Cornell University and Jim Amonette of the Pacific Northwest National Laboratory in Washington state suggest that a reduction of between one and two gigatonnes of carbon-emission a year might be achievable.
ECONOMIST: Biochar could enrich soils and cut greenhouse gases as well
His advocacy of a "world without nuclear weapons" affords a vehicle for challenging the President's like-minded efforts to bring about the only thing that is remotely achievable - if unimaginably irresponsible: a world without U.S. nuclear weapons.
CENTERFORSECURITYPOLICY: Chuck Hagel as a 'Teachable Moment'
It's why I've set a clear and achievable mission-to disrupt, dismantle and defeat al Qaeda and its extremist allies and prevent their return to either country.
And these -- this is a real, achievable plan that will lead to new jobs and more opportunity, and rebuild this economy on a stronger foundation.
The main problem is not lingering Marxist habits of thought: a taste for all-in-one explanation, a romantic refusal to temper the desirable with the achievable, a stoical faith that the historical agent of radical change may yet appear, though none is now visible.
Even third place, and therefore finishing above north London rivals Arsenal for the first time since the 1994-95 season, is achievable for Spurs, although they need to make up a two-point deficit on the Gunners.
"If, on the other hand, our criteria is a messy, sloppy status quo but there's not huge outbreaks of violence, there's still corruption, but the country is struggling along, but it's not a threat to its neighbors and it's not an al-Qaida base, that seems to me an achievable goal within a measurable timeframe, " Obama said.
She acknowledges that a vaccine against HIV is still "a missing piece" in the jigsaw - but believes remission is an achievable objective.
While this is an aggressive projection, it is definitely achievable if complex, high-priced DNA tests become a part of of mainstream medicine.
In 1992, when the Cup was held in Australian and New Zealand, South Africa needed 22 runs off the last 13 balls (an achievable, if difficult, task) in a knockout semi-final against England.
And it is possible that the programme's professed aim to become a pan-African model for African business education and African business in general is achievable, bearing in mind CEIBS's success in China.
ECONOMIST: A selection of news from around the business campuses
The one big change that lawyers think might be achievable without referendums is creating a foreign minister, which could be done by inter-governmental agreement.
If federal immigration law is reformed with substantial Republican support including for a long and demanding but achievable process of earning legal status the GOP can consistently earn 35%-40% among Hispanics.
Mr Cameron insisted the cuts were "totally achievable" without any reduction in the visible policing presence and said that a "surge" of officers - as seen in recent days - would still be possible in future.
BBC: England riots: Cameron says police admit to wrong tactics
But during Thursday's debate, the prime minister insisted the cuts were "totally achievable" without any reduction in the visible policing presence and said that a "surge" of officers - as seen in recent days - would still be possible in future.
BBC: Riots: Police defend handling of crisis after criticism
应用推荐