If domestic cats wore bell collars in urban areas the numbers of native birds caught and killed could be reduced by as much as half, a new University of Otago study shows.
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I have a love/hate affair with biofuels and biodiesel, because while they may be cleaner than petro-fuels, and considered a renewable resource, growing the feedstock usually entails a lot of land and a lot of water, both of which are limited resources. But if a new process for making biodiesel from sewage sludge gets commercialized, every flush of the toilet could be helping to fuel some of our energy needs. Via Hans De Keulenaer Delete the scoop?
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