globalbriefs


News and resources to inspire concerned citizens to work together in building a healthier, stronger society that benefits all.


Breeze Please A Third of U.S. Power May Be Wind by 2050


According to a new study by the U.S. Energy Department (Tinyurl.com/EnergyDepartmentWindReport), wind power could provide more than a third of the nation’s electricity in a few decades, while posting a net savings in energy costs. Undersecretary for Technology and Energy Lynn Orr, Ph.D., states, “With continued commitment, wind can be the cheapest, cleanest option in all 50 states by 2050.”


Wind power has tripled since 2000, and now supplies nearly 5 percent of


the country’s electric power. The report says that it could dramatically reduce air pollution and go a long way toward meeting the country’s goals of slowing climate change. Meanwhile, Spanish engineers have invented the Vortex Bladeless wind turbine,


a hollow straw that sticks up 40 feet from the ground and vibrates when the wind passes through it. Instead of using a propeller, the Vortex takes advantage of an aerodynamic effect called vorticity. The result is a turbine that’s 50 percent less expensive than a bladed model and is nearly silent. It’s not as efficient as conventional turbines, but more of them can be placed in the same amount of space, for a net gain of 40 percent in efficiency. Plus, with no gears or moving parts, maintenance is much easier and they are safer for bats and birds.


Source: Wired


Bottomless Well De-Salting Water Could Help Drought-Stricken Areas


A team from the Massachusetts Institute of Technology and Jain Irrigation Systems has devised a method of turning brackish water into drinking water using renewable energy. This solar-powered machine is able to pull salt out of water and disinfect it with ultraviolet rays, making it suitable for both irrigation and drinking. Electrodialysis works by passing a stream of water


between two electrodes with opposite charges. Because the salt dissolved in water consists of positive and negative ions, the electrodes pull the ions out of the water, leaving fresher water at the center of the flow. A series of membranes separate the freshwater stream from increasingly salty ones. The photovoltaic-powered electrodialysis reversal system recently won the top $140,000 Desal Prize from the U.S. Department of Interior. “This technology has the potential to bring agriculture to vast barren lands using brackish water,” says Richard Restuccia, Jain’s vice president of landscape solutions. The prize was developed to supply catalytic funding to capture and support innovative ideas and new technologies that could have a significant impact on resolving global water demand. Among 13 desalination projects under consideration along the California coast, the Carlsbad Desalination Project will be the largest in the Western Hemisphere once it is completed in the fall.


Source: EcoWatch.com natural awakenings September 2015 13 Embracing Invasives


Rethinking the Balance of Nature


Environmental journalist Fred Pearce, author of the new book, The New Wild: Why Invasive Species Will Be Nature’s Salvation, traveled across six continents and ecosystems from remote Pacific islands to the United Kingdom and the Great Lakes to reveal some outdated scientific ideas about invasive species and the balance of nature. Pearce argues that mainstream


environmentalists are correct that we need a rewilding of the Earth, but they are wrong if they believe it can be achieved by reengineering ecosystems. He thinks that humans have changed the planet too much, and nature never goes backward. But a growing group of scientists is taking a fresh look at how species interact in the wild. According to these new ecologists, we should applaud the dynamism of alien species and the new ecosystems they create. In an era of climate change and widespread ecological damage, it’s crucial that we find ways to help nature regenerate. Embracing this new ecology, Pearce proposes, is our best chance, maintaining, “To be an environmentalist in the 21st century means celebrating nature’s wildness and capacity for change.”


Source: Earthtalk.org


You can’t help getting older, but you don’t have to get old.


~George Burns


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