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Warming threat worse in tropics – Los Angeles Times
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Scientists say many species can’t tolerate small temperature rises.
WASHINGTON — While global warming is expected to be strongest at the poles, it may be an even greater threat to species living in the tropics, scientists say. Tropical species are accustomed to living in a small temperature range and thus may be unable to cope with changes of even a few degrees, according to an analysis in Tuesday’s edition of Proceedings of the National Academy of Sciences.
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The tropical species in our data were mostly thermal specialists, meaning that their current climate is nearly ideal and any temperature increases will spell trouble for them.” PNAS: http://www.pnas.org
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Science Promotes Biodiversity and Native Seed Production
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Native Seeds Fight Food Shortage and Global Warming : TreeHugger
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a solution to food production and global warming. The key ideas are:
1. Biodiversity increases the ability of an ecosystem to capture carbon, says Brown University.
2. There are 100’s of economically important native seeds according to Lee and Maggie Arbuckle.
3. Native perennial grasses can be used as food, according to The Land Institute.
4. Harvesting perennial grasses is getting easier, with the Arbuckle Native Seedster.Together these innovations change the framework for how we can turn sunlight and water into food. Incorporating these ideas could sequester carbon dioxide from the atmosphere, provide economic growth, improve soil health, reduce fossil fuel use, and provide sustainable and resilient food production.
The journal Nature had an editorial today that called for an increase in spending on agricultural research and development, particularly agricultural systems adapted to place.
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Studies, like the one completed at Brown, are emerging that show a diverse habitat captures more energy, and sequesters more carbon than a simple, less diverse habitat (like a monoculture).
One of the great unexplored opportunities is the cultivation of native seeds for use as food. Over 80% of native North American seeds are perennial, with roots up to six feet deep. These deep roots hold moisture through a dry spell, and allow for a rich habitat that builds priceless topsoil. The Land Institute has begun cultivating varieties for human agriculture that moves us away from planting a monoculture of annuals, to a polyculture (more diverse) of perennials.
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Green Roofs Take Root: a new site
American Society of Landscape Architects: Welcome Annotated
A green roof replaces traditional roofing with a lightweight, living system of soil, compost, and plants.
The plants–and the dirt and gravel that hold them–filter rainwater and some of its pollutants. The plants produce oxygen that help clean the air. A green roof reduces a building’s heating and cooling costs, acting as a form of insulation. And they lessen the heat island effect, in which buildings warm up so much that they heat the surroundings.
Explore the Benefits of a Green Roof
A Vision to Plant One Billion Trees by 2015 in Brazil’s Atlantic Forest
Nature Conservancy News Room – The Nature Conservancy Launches “Plant a Billion Trees Campaign” with Planet Green Annotated
Today, The Nature Conservancy launched the “Plant a Billion Trees Campaign” at www.plantabillion.org to restore and plant one billion trees by 2015 in Brazil’s Atlantic Forest, one of the greatest repositories of biodiversity on Earth.
Just a small fraction of the size of the great Amazon rainforest, the Atlantic Forest is home to 1,180 vertebrate species – mammals, amphibians, reptiles, fish, and birds – representing 5% of the vertebrates on Earth.
To learn more about The Nature Conservancy’s Plant a Billion Trees Campaign, visit: www.plantabillion.org.
State of the Planet: Will the US Solve Climate Change?
Will the U.S. solve the climate change problem? Blogs Scientific American Community Annotated
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Mar 29, 2008
Either the ingenuity unleashed by the United States own special mix of free markets and government regulation will solve the climate change crisis or the rest of the world, having witnessed an American government content to stick its head in the sand, will forcibly compel the country into a green future. Such, at least, were the terms of the debate last night that wrapped up Day 1 of the State of the Planet conference at Columbia University.