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The world faces serious implications from the rapidly declining Arctic Sea Ice

EarthTalk: Implications of Declining Arctic Sea Ice

EarthTalk® is a weekly environmental column made available to our readers from the editors of E/The Environmental Magazine Dear EarthTalk: I heard that the Arctic summer sea ice is at its lowest level since we began recording it. What are the implications of all this melting?              – Jo Shoemaker, Bowie, MD It is true that on September 16, 2012…

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Environmentalists have cheered several of President Obama’s moves during his first term, but dismay his lack of follow-through on a 2008 campaign promise to label genetically modified foods. Mitt Romney doesn’t have much of an environmental track record, but has been open minded to both regulatory and market-based policy ideas.

EarthTalk: Obama and Romney on the Environment

EarthTalk® is a weekly environmental column made available to our readers from the editors of E/The Environmental Magazine Dear EarthTalk: Given that the presidential election is just around the corner, what can you tell me about each candidate’s environmental track record and positions?  – Jane Miller, Chicago, IL Just because the environment is getting short shrift this election season due…

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The amount of carbon dioxide (CO2) in the atmosphere today is roughly 390 parts per million (ppm), well above the 275 ppm it was before we started pumping pollution skyward during the Industrial Revolution. Climate scientists and green leaders today agree that 350 ppm would be a tolerable upper limit.

EarthTalk: Atmospheric CO2 – Is it Too Late Anyway?

EarthTalk® is a weekly environmental column made available to our readers from the editors of E/The Environmental Magazine Dear EarthTalk: I read that CO2 in our atmosphere is now more than 300 parts per million. Doesn’t this mean that we’re too late to avoid the worst impacts of climate change?  — Karl Bren, Richmond, VA Actually the amount of carbon…

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There are many ways to define a sustainable community, but in general they sport healthy amounts of green space and shared vegetable gardens; mass transit, biking and walking replacing the majority of automobile traffic; and mixed use communities where schools, residences and commercial spaces are near each other and are powered by clean, renewable energy sources.

EarthTalk: Defining Sustainable Communities

EarthTalk® is a weekly environmental column made available to our readers from the editors of E/The Environmental Magazine Dear EarthTalk: The term “sustainable communities” gets bantered around quite a bit today. Could you define it for me?  – Holly Parker, Mechanicsburg, PA Kaid Benfield, Sustainable Communities program director at the Natural Resources Defense Council (NRDC), uses the term “sustainable communities”…

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Water recycling, settling, purification in tank on industrial station.

EarthTalk: The Deep Carbon Footprint of Water Managament

EarthTalk® is a weekly environmental column made available to our readers from the editors of E/The Environmental Magazine Dear EarthTalk: I read somewhere that our various systems for collecting, distributing and treating water are very energy intensive and, as such, contribute significantly to global warming. How does that happen and what can we do to correct such problems?            – Marina…

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Can Thorium provide an answer to the problems of nuclear power?

EarthTalk: The Promise of Thorium – Real or Hype?

EarthTalk® is a weekly environmental column made available to our readers from the editors of E/The Environmental Magazine Dear EarthTalk: Thorium is a naturally occurring element that is supposedly more available, more efficient and safer to use than uranium for generating nuclear energy. Is this true and, if so, why haven’t we made the switch?    – Jane Westermann, Austin,…

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Climate change is affecting many more species than polar bears. The National Audubon Society found that 60 percent of the 305 avian species in North America during winter have shifted their ranges northward by an average of 35 miles, thanks to warming temperatures. The American Goldfinch, pictured here, has moved some 200 miles north in the last 40 years

EarthTalk: Wildlife and Global Warming

EarthTalk® is a weekly environmental column made available to our readers from the editors of E/The Environmental Magazine Dear EarthTalk: I know that polar bears are losing ice cover due to climate change, but what are other ways that global warming affects wildlife around the globe? – Hanna Bond, Hartford, CT Although perhaps the best known examples, polar bears certainly aren’t…

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