Archive for the ‘environment’ Category

Wierd Weather and Wake-Up Calls

tornado.jpgThunderstorms and tornados have been pounding the southeast USA over the past 12 hours. I woke this morning and found my aunt fretting over her television. She told me that my hometown was ducking for cover because a rotating storm cell was coming in fast; the Weather Channel mentioned Chattanooga by name. At 7am, I knew that most of my family was still asleep. I called home and gave them a heads-up.

Growing up in the southeast we were very familiar with summer thunderheads and tornado drills. At school we practiced ducking for cover in cinderblock hallways and were vaguely aware of the language of dangerous weather. Tornado warnings meant nothing at all; tornado watches were almost as distracting at school; air raid sirens were rare but frightening. Almost everyone had a distant “cousin” who had seen a real tornado. Read the rest of this entry »

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How to Harvest Hydrogen with Zero Carbon Emissions

Let me be the first to admit that I don’t know much about hydrogen. It’s the most abundant element in the universe and yet elusive here on earth. There seems to be a conflict of logic here, but remember that it is the lightest element. It is so light weight that on earth it rises above other useful gases like oxygen and escapes into space. Fortunately finding hydrogen is not the problem; usually scientists rip it out of other materials like water. There are several commercial methods to achieve this, but most are energy-intensive or expensive. Hydrogen likes to bond to other elements so convincing it to “come away quietly” is difficult. Enter Nanoptek’s new solar hydrogen generator.

nanoptek’s solar hyrdogen generatorUsing solar or other renewable energies to produce hydrogen is not a new idea, but making it work has been difficult. With solar energy the trick has been to create stable electrodes that can split water into hydrogen and oxygen. The problem? Creating an electrode stable enough to do the job has presented a formidable hurtle. Nanoptek has apparently cleared the jump. Michael Kanellos from CNet News explains it well:

Other companies have tried to use titania electrodes for this job in the past, but they broke down relatively rapidly, according to Nanoptek. The company’s electrodes work better because, ironically, they are more brittle. The crystal lattice in the electrode is stressed, i.e. additional materials are added. (Semiconductor makers similarly stress their chips with germanium to create strained silicon, which improves performance.)

This technology is still in experimental stages, but Nanoptek is nevertheless collecting investments and research funding to bring it off the drawing table. The company website suggests several potential markets for their future product. Their stand-alone system could provide clean energy and water for developing communities, home fuel production for hydrogen cars, back-up power for hospitals, businesses, or cell towers, and of course support for manufacturers or the larger energy grid.

Of course this is no utopian vision of clean energy for all. The solar system requires square footage to generate enough energy to produce the hydrogen. The company claims a “rooftop area of about 50 ft by 50 ft would supply enough hydrogen for the driving needs of an average family of 4.” That’s not a terribly small amount of space if you live in say, and apartment building or a small home. There is also the issue of cost, which the company does not seem ready to approach yet. The environmentalist in me would also want to know about the production process and weigh the benefits.

This is still a step in the right direction. Who knows? A few decades from now we could all enjoy clean hydrogen cars or power our air conditioners and appliances with hydrogen. We could generate our own drinking water or even recycle our gray water back into the system. Image a day when releasing water vapor via car emissions starts to effect the environment? Well, maybe not. But this technology certainly opens some important doors towards a much-anticipated green technology.

(for more info visit CNet news and Nanoptek.com)

(image courtesy of Nanoptek.com)

Behind Enemy Lines: More Notes From a Coal Family

A Coal Mine perhaps 2.5ft tallA “coal family” is a term I use to describe more than our source of income. Like many industries, there is a whole community and culture surrounding coal. In fact, given the remote regions where mines are often located, I would argue that coal industries create a unique and particularly strong culture. This has been true in Appalachia for over 100 years. The remote and ornery hollars are still the stuff of legend: liquor stills, bluegrass, and square dances still exist throughout the Blue Ridge and Smokies. One year an employee gave my father a gallon of moonshine for Christmas; another year it was a home-grown honey baked ham.

Coal is as riddled through this living tradition as the seams in the hills. The region is rich in the history and dirges surrounding the mines. The winding county roads that lead into the mines are lined with the physical community: the brick homes of skilled labor, double-wide trailers, and a few burnt down shacks. They live on a narrow strip of land between mountain sides and muddied creeks, or perhaps “in town”, the next valley over. Until recently these were forgotten, unpaved roads. No longer: civilization has encroached.

Walmart and McDonalds have arrived with a fresh four-lane road that leads to I-75. The new business promised a new way of life, namely the life that the rest of the world was supposedly living while miners labored underground. But the new jobs pay less than the mine work, and civilization added demons to the community instead of exorcising them. Ten years ago the burnt-out shacks along the road were over-achieving liquor stills. Now they’re meth labs. The world betrayed their trust upon arrival. Is it any wonder then that these mountain towns are hot spots for drug abuse and snake handling? How would you react if you were trapped between the steady stone of the mines and unsafe waters of the outside world? Who would you trust?

I asked my father about employment in the mines. Could a high-school drop out rise through the ranks to skilled labor? “Sure,” he replied, “We’d start a kid out driving trucks. If he could be trusted we’d move him up to operating machinery or something. Problem is now days, I can’t get any good kids on staff. Eighty percent fail the drug test.”

Coal is a complicated issue, and not all of it is environmental. We must always remember that the environment and society move hand-in-hand. If we want to reduce the role of coal in this country, we need to offer these mountain communities a viable alternative. A huge 4-wheeler park recently opened near the mines. The remote wilderness has attracted outdoor enthusiasts from across the east coast. The unspoiled forest with its wild turkey, deer, bear, and elk have already raked in over a million dollars for the local community. Alternatives exist, and if the people can see the path clearly, they will leave their narrow road to forge a new one - but only on their own terms.

Does the Green Job Hype promise too much too soon?

I’ve heard a lot about a green economy’s potential and the boost it could promise for the job market. Living on Earth and others have reported on the topic recently. It’s big news if the promises come through: blue collar jobs for millions of Americans, upward social mobility, and an international industry for the U.S.A. to dominate. Let’s not forget the icing on the cake, the wide-spread benefits for society and the environment. It sounds like a win-win situation if it takes off. Google just invested millions into solar and wind and hopes to help make renewables cheaper than Nanosys’s new solar technology could be cheaper than coalcoal. Things are already looking up, right?

If you cruise the various “Green Job Boards” (see a list below) you may be inclined to agree. The boards are littered with jobs in every field around the country. California, Washington DC and New York City are hot spots for these positions.The national job boards often do not include local listings. The local job market cannot be underestimated, as an area like the Baltimore/DC metro corridor encompasses millions of businesses and local job seekers. Even my native Chattanooga, TN boasts a cut of the green economy. The city is proud of its electric bus fleet and Riverpark and they help boost the local economy.

This past August I felt elated as I sat down to career search in the green economy. As a college grad with a double-major from a prestigious liberal arts college and a year of international working experience, I thought it wouldn’t take long (a month or two) before I landed a “green” job. The afore-mentioned reports gave me that hope we idealistic youth grow out of as reality sets in, but it has been four months with two interviews. Reality is come. There will always be some positions available, but I’m referring to a boom in growth. I’d like to pose this question to the blog sphere. Has the recent economic downturn sapped the surge? Do we need government subsidies or will new advances provide all the impetus we need?

 Job search sites with the environment in mind: 

http://www.greenbiz.com/jobs/ 

http://www.sustainablebusiness.com/

http://www.greenjobs.com/Public/Index.aspx 

http://www.ecoemploy.com/

http://www.simplyhired.com/a/special-searches/eco-friendly

http://www.environmentalcareer.info/jobseekers/search.asp 

(image courtesy of  celsias.com)

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