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|BOGOTA， Nov. 24 (Xinhua)-- Colombian President Juan Manuel Santos and the leader of the Revolutionary Armed Forces of Colombia (FARC)， Rodrigo Londono， signed a revised peace agreement here on Thursday.
This came less than two months after a plebiscite narrowly rejected the original agreement， which took four years to negotiate.
In his speech， London apologized to the victims of the conflict in the name of the FARC， and hailed the new agreement as the common wish of all Colombians to end the war.
"Words are the only weapons that Colombians allow us to use，" said Londono， who called on the former enemies to co-exist despite their differences.
Santos said the revised agreement was the result of a rigorous discussion between the government and FARC， who had gathered for weeks in Havana， Cuba， to consider proposals to those who opposed the first peace agreement.
Santos stated that peace must be the most important topic for any nation and that Colombia should become an example in a world riven by conflicts.
"Building a country at peace is the most ambitious and transformational project that any generation has ever had the opportunity to fulfill. I cannot imagine a more noble， a more sublime task， a more elevated effort than protecting life and building peace，" he stated.
Unlike the previous agreement， this new deal will not be subject to a public vote but will have to be approved by Congress over the course of the next week.
Within 90 days after the approval， the FARC will begin to lay down arms. And within five months， all the weapons of the FARC will be in the hands of the UN.
SAN FRANCISCO Nike Air Max 90 Sale Online , May 14 (Xinhua) -- A new book, by University of Washington (UW) geologist David R. Montgomery, tries to be upbeat about rebuilding Earth's soils.
The book, "Growing a Revolution: Bringing Our Soil Back to Life," is a good-news environment story compared to the author's first popular book Nike Air Max Sale Online , "Dirt," which was about how erosion undermined ancient civilizations around the world in places like modern-day Syria and Iraq.
"This new book was my attempt to ask the question: Can soil be restored at scale? On real farms, not in some little yard in Seattle. Could it be done on real, commercial farms in the developed world, as well as on subsistence farms in the developing world?" Montgomery was quoted as saying in a news release from UW.
Available this month Air Max 2018 Sale Online , a decade after the first pop-science book, "Growing a Revolution" weaves a travelogue with history and science to tell of visits to farms in North and South Dakota, site of the famous Dust Bowl, as well as Ohio, Pennsylvania Air Max 2017 Sale Online , Africa and Costa Rica. These farmers use technology ranging from hand-powered machetes to enormous modern no-till seeding machines.
The Dust Bowl was a period of severe dust storms that greatly damaged the ecology and agriculture of the American and Canadian prairies during the 1930s; severe drought and a failure to apply dryland farming methods to prevent wind erosion caused the phenomenon.
The success of "Dirt" brought invitations to speak at farming conferences. Along the way, Montgomery met farmers who talked about successes in restoring health to degraded soils. "I kept running into examples of farmers who had restored fertility to degraded land. So I started asking, what did you do? How long did it take? I began to recognize patterns among farmers who had been successful not just in restoring soil, but in restoring profits to their farms."
Seeing approaches that worked in very different situations, the UW professor of Earth and space sciences sought out the common ground for building fertile soil as a consequence of farming.
These farmers had moved away from tilling their fields Air Max 90 Sale Online , which chops up worms, erodes soil and disrupts beneficial microbes. Instead they focused on boosting soil health, thereby bolstering a crop's natural defenses. "It boils down to a combination of three factors: Park the plow to minimize soil disturbance; grow cover crops, including legumes to get nitrogen and carbon into the soil; and grow a diversity of crops, so that you can break up the pest and pathogen carryover problem Air Max Sale Online ," he said. "Those three principles -- ditch the plow, cover up, grow diversity -- were common among the farmers that had restored degraded soils and returned profitability to their farms."
He intentionally did not seek out "alternative" or "environmental" practices. The most farms he visited were not certified organic. Most farmers were motivated by economic worries and the skyrocketing costs of herbicides, pesticides and diesel. By nurturing healthier soils that can retain water, suppress pests and don't require as much fertilizer Nike Air Max 2018 Sale Clearance , pesticides or work of diesel-powered machines, they reduced their costly inputs by at least 50 percent and up to 90 percent.
Beyond the economic payoff for farmers, adopting these practices produces environmental benefits by reducing chemical use and sequestering carbon from the atmosphere to help counter climate change, Montgomery said.
"I think there's a big opportunity to make conventional agriculture more 'organic-ish' by adopting this suite of practices," Montgomery said. "By moving away from high-disturbance Nike Air Max 2017 Sale Clearance , high-input agriculture you can reap many of the benefits of soil health without necessarily going fully organic."
American soils are currently estimated to have lost about half their pre-agricultural organic matter, a key ingredient in fertile soil.
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