Scientists Seeking to Save World Find Best Technology Is Trees (Bloomberg) -- Oxford University scientists, after a year of research, have determined the best technology to suck carbon dioxide from the atmosphere and try to reverse global warming. It’s trees. They considered methods ranging from capturing emissions from factories and power stations to extracting carbon dioxide directly from the air, and adding lime to oceans to increase their absorption of the gas, a study released on Tuesday showed. None were more promising than planting trees, or baking waste wood to form a type of charcoal that can be added to soil. Relative to other so-called Negative Emissions Technologies, afforestation and biochar are low-cost, have fewer uncertainties and offer other benefits to the environment, the research shows. Policy makers need to work to increase their use as they are the most encouraging of the possibilities through 2050, the scientists wrote. To contact the reporter on this story: Louise Downing in London at ldowning4@bloomberg.net
Forest&Life: Parrainage POUR CHAQUE ARBRE PARRAINé EN FRANCE, 2 ARBRES PARRAINéS AU PEROU Les écoliers français replantent, avec leurs instituteurs, la forêt landaise dévastée par la tempête Klaus. Ils ont décidé, en plus, de venir en aide aux enfants vivants dans une région désertique du Pérou, où la forêt est encore plus précieuse. Zones d'action : FRANCE Landes, région Aquitaine (Sud Ouest). PEROU Région de Piura (Nord Ouest) Porteur(s) de projet : FRANCE Inspection académique des Landes, Musée Graine de Forêt, avec le soutien de l'association des Maires des Landes. Bénéficiaires : FRANCE 2 500 personnes, 100 écoles. Contexte : FRANCE La forêt landaise a été dévastée par les tempêtes Martin en 1999 et Klaus en 2009. Essence(s) d'arbre(s) plantée(s) : FRANCE L'essence plantée est le Pin maritime.
Central Arid Zone Research Institute Division of Natural Resources and EnvironmentDivision of Integrated Land Use Management and Farming Systems Division of Plant Improvement, Propagation and Pest Management Division of Livestock Production Systems & Range ManagementDivision of Agricultural Engineering for Arid Production Systems Division of Transfer of Technology, Training and Production Economics Division of Natural Resources and Environment Major Programmes Integrated basic and human resource appraisal, monitoring, and desertification Disciplines Agronomy, Agro-meteorology, Economic Botany, Geography, Pedology, Soil and Water Conservation Engineering, Soil Chemistry Current activities Division of Integrated Land Use Management and Farming Systems Integrated arid land farming system researchPlant product processing and value additionManagement of land and water resources Agronomy, Agroforestry, Horticulture, Plant Physiology, Soil and Water Conservation Engineering, Soil Physics
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Brasil exporta cerca de 112 trilhões de litros de água doce por ano Contêineres saem diariamente de portos na costa brasileira abarrotados de carne bovina, soja, açúcar, café, entre outros produtos agrícolas exportados para o mundo. Mas dentro deles há um insumo invisível, cujo valor ultrapassa cálculos estritamente econômicos. Ao longo do ano, o Brasil envia ao Exterior cerca de 112 trilhões de litros de água doce, segundo dados da Unesco — o equivalente a quase 45 milhões de piscinas olímpicas ou mais de 17 mil lagoas do tamanho da Rodrigo de Freitas. As Nações Unidas (ONU) estimam que, até 2025, cerca de dois terços da população mundial estarão carentes de recursos hídricos, sendo que cerca de 1,8 bilhão enfrentarão severa escassez de água. — A alocação dos recursos hídricos, além de ambiental, é uma questão econômica, porque quando a água é escassa é preciso destiná-la para onde haverá maiores benefícios para a sociedade. Recursos hídricos sem preço — O Brasil não tem dependência de irrigação, precisa apenas administrar a água da chuva.
Quirky Winds Fuel Brazil's Devastating Drought, Amazon's Flooding In São Paulo, Brazil, which is suffering its worst drought in almost a century, Maria de Fátima dos Santos has lived for days at a time with no water, relying on what she had carefully hoarded in bottles. But in the Bolivian Amazon, about 1,800 miles (2,897 kilometers) away, Nicolás Cartagena recalls the day almost a year ago when floodwaters rose to the thatched rooftops of Indian communities, destroying crops and washing away homes. The drought in South America's biggest city and the flooding in the Amazon are being triggered by the same wind-driven weather phenomenon that scientists say is probably a harbinger for more extreme water shortages and flooding across the continent. No one fully understands this boom-and-bust cycle, but meteorologist José Marengo says it has been triggered by a sprawling high-pressure system that settled stubbornly over southeastern Brazil. The loop starts in the Atlantic Ocean, where the winds carry moisture westward over the Amazon. Constant Boom and Bust
A City's Best Defense Against Climate Change? Its Trees, Wetlands, and Watersheds Faced with aging infrastructure and extreme weather, mayors of American cities are moving to reconnect urban areas with nature to protect drinking water, coastlines, and air quality as climate change accelerates. When a city incorporates natural infrastructure into its planning, it turns to living assets such as urban trees, wetlands, and watersheds to reduce pollutants and provide protection from storms and hurricanes. So effective is the strategy that the United States Conference of Mayors on Monday approved a resolution that encourages its 1,400 members to start building green bulwarks against climate change. Philadelphia, for instance, already is using green infrastructure to manage its storm water challenges. Runoff from the city’s streets, parking lots, roofs, and playgrounds once triggered sewer overflows that inundated waterways with pathogens, debris, and other pollutants, and made rivers unsafe for swimming and boating after storms.
Startup vai usar drones para semear 1 bilhão de árvores por ano Corte de madeira, mineração, agropecuária e a cada vez maior expansão dos centros urbanos em direção às florestas são responsáveis por levar ao chão aproximadamente 26 bilhões de árvores por ano. Para reverter este cenário de destruição, o americano Lauren Fletcher sonha em fazer um replantio em escala industrial: semear 1 bilhão de árvores por ano usando drones. “Há anos eu e meu time estudamos as mudanças climáticas. Com esta tecnologia, acreditamos que poderemos mudar o mundo”, afirma o visionário. Fletcher, engenheiro que trabalhou durante 20 anos na Agência Aeroespacial Americana (Nasa), é o CEO da BioCarbon Engineering, sediada em Oxford, na Inglaterra. No ar, os drones farão o mapeamento preciso das áreas que precisam ser replantadas, gerando imagens em alta resolução e mapas em 3D. O sistema é bastante sofisticado. A técnica de agricultura de precisão garantirá o replantio em larga escala. Numa última etapa, os drones servirão para monitorar as áreas que foram replantadas.