Sci/tech

Arctic Ecosystems Changing, May be Irreversible
September 11, 2009 07:27 AM - Andrea Thompson, Live Science

The dramatic changes sweeping the Arctic as a result of global warming aren't just confined to melting sea ice and polar bears — a new study finds that the forces of climate change are propagating throughout the frigid north, producing different effects in each ecosystem with the upshot that the face of the Arctic may be forever altered.

India Could Halve Emissions Growth, at a Cost
September 10, 2009 07:32 AM - Anna da Costa, Worldwatch Institute

Growth in India's carbon emissions could be nearly halved by the year 2030 through the use of known practices and technologies, according to a new report from McKinsey & Company. Through a "step-change in...efforts to lower emissions," India's carbon output could grow from 1.6 billion tons in 2005 to only 2.8 billion tons in 2030 as the country's population expands and its economy develops, the report said. This is down from a previously projected 5-6 billion tons for 2030.

Tomatoes thrive on urine diet
September 10, 2009 07:22 AM - Wagdy Sawahel, SciDevNet

Using human urine as a fertilizer produces bumper crops of tomatoes that are safe to eat, scientists have found.

Navy to Make Jet Fuel From Seawater
September 10, 2009 07:13 AM - Eric Bland, Discovery News

The U.S. Navy could soon be sailing through an ocean of jet fuel if new research proves economical.

Fish Farms Supply 50% of Global Harvest
September 8, 2009 11:45 AM - R. Greenway, ENN

Fish farms, once a fledgling industry, now account for 50 percent of the fish consumed globally, according to a new report by an international team of researchers. And while getting more efficient, it is putting strains on marine resources by consuming large amounts of feed made from wild fish harvested from the sea, the authors conclude. Their findings are published in the online edition of the Proceedings of the National Academy of Sciences.

Maldives to introduce green tax on tourists
September 8, 2009 07:18 AM - Ranga Sirilal, Reuters

The Maldives archipelago, threatened by rising sea levels blamed on climate change, said on Monday it would introduce a new environment tax on all tourists who use its resorts and provide its economic lifeline.

Comment on "$20 Per Gallon"
September 7, 2009 09:42 AM - M Molendyke, ENN Community

Not often is a book written that can explain the intricacies and effects of economics, international relations, and the green movement, and how the three impact the sociology of our country and our world. However, in his recently released book “$20 Per Gallon,” Christopher Steiner does just that, and makes it interesting and funny to boot.

Humans Causing Erosion Comparable To World’s Largest Rivers And Glaciers
September 7, 2009 07:09 AM - ScienceDaily, Adapted from materials provided by University of British Columbia

A new study finds that large-scale farming projects can erode the Earth's surface at rates comparable to those of the world's largest rivers and glaciers. Published online in the journal Nature Geoscience, the research offers stark evidence of how humans are reshaping the planet. It also finds that - contrary to previous scholarship - rivers are as powerful as glaciers at eroding landscapes.

Methane Gas Could Increase From Oceanic Vents
September 6, 2009 08:03 AM - Roger Greenway, ENN

New MIT research by Denise Brehm, Department of Civil and Environmental Engineering, funded by the U.S. Department of Energy looked at the potential for a compound affect of warming global temperatures on the level of methane being released by oceanic vents. The premise is that rising global temperatures could be accompanied by melting permafrost in arctic regions and that this could initiate the release of underground methane into the atmosphere. Once released, that methane gas would speed up global warming by trapping the Earth's heat radiation about 20 times more efficiently than does the better-known greenhouse gas, carbon dioxide.

Arctic Geological Record Correlates Warming to Man
September 5, 2009 11:52 AM - Thomas H. Maugh II, Los Angeles Times

Long-term climate records from the Arctic provide strong new evidence that human-caused global warming can override Earth's natural heating and cooling cycles, U.S. researchers reported this week in the journal Science.

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