Skip to main content

Home/ LCENVS/ Group items tagged technology

Rss Feed Group items tagged

Jim Proctor

Technology Leads More Park Visitors Into Trouble - NYTimes.com - 1 views

  •  
    Okay, everyone, out go the earplugs when you're in the Great Outdoors!  Has anyone seen similar cases of park visitors being tuned out?
  •  
    Slate tries to puncture a hole in the Times' analysis here: http://www.slate.com/id/2264778/?from=rss
Kelsey White-Davis

Ancient Italian Town Has Wind at its Back - 1 views

  •  
    Tocco de Casuaria, Italy is a small town that has installed wind and solar energy and is now producing a 30% surplus of energy that they are able to sell to the electricity company. With this money, the people of Tocco have been able to increase the wages of street workers as well as town maintenance. The financial benefits of using renewable energy, versus a deep concern for the health of the natural environment, has been the driving force for this town and other towns across Europe to adapt this new technology. This conversion is more difficult in the U.S. because the government does not provide a great incentive for people using renewable energy as far as a cash return from excessive energy production.
Jim Proctor

Critic's Notebook - In Arabian Desert, a Sustainable City Rises - NYTimes.com - 2 views

  •  
    A fascinating review, certainly to understand the technological advances of this "sustainable city" but also to understand its shadows: "[the designer's] fantasy world is only possible as a meticulously planned community, built from the ground up and of modest size. What Masdar really represents, in fact, is the crystallization of another global phenomenon: the growing division of the world into refined, high-end enclaves and vast formless ghettos where issues like sustainability have little immediate relevance."  Is this what we are after?
Gus Hynes Hoffmann

U.S. Military Orders Less Dependence on Fossil Fuels - 1 views

  •  
    Now this is very interesting, if not particularly surprising. The US military has begun pushing for the development of renewable energy sources that can be readily deployed in battlefield situations and remote locations where traditional fossil fuels are prohibitively scarce. Trucking fuel to outposts and encampments in Afghanistan can be dangerous: "...for every 24 fuel convoys that set out, one soldier or civilian engaged in fuel transport was killed. " It is also extremely expensive. The US military buys fuel for around $1 a gallon, but shipping that fuel can easily cost hundreds of dollars per gallon. Taking those transport costs into account, the high initial costs of investing in renewable energy are put into perspective. The US navy has begun to experiment with ships that run on electricity at lower speeds, as well as jets that use mixtures of conventional and bio-fuels. It is likely the "experts" say, that development of these technologies for military use will lead to more affordable civilian versions.
Julia Huggins

Yale Environment 360: New Google Earth Technology Allows Tracking of Environmental Changes - 0 views

  •  
    We live in the age of data and here's another great application of our ever developing analysis tools. Very relevant to our ENVS 220 GIS unit.
Julia Huggins

Vertical farming: Does it really stack up? | The Economist - 2 views

  •  
    A challenge to the idea that vertical farming may be more energy efficient than traditional approaches. Like the debate around local food though, it bothers me that we focus on energy and/or CO2 emissions when we measure environmental impact. In a much bigger picture, I'm not even so sure that another agricultural revolution, like this, is really what's best for the planet in the long run.
  •  
    Good points all. While the excitement about vertical farms is good for attracting investors, the economic realities of all the systems involved are definitely questionable. That said, the Economist left out some things that are worth mentioning, both for and against the idea. First of all, the use of hydroponics is thrown out pretty willingly and easily, but its hardly simple. For one, you're moving away from the use of soil (and fertilizer, manure, other related mediums) as the primary medium for agricultural production. We are simulatenously just realizing that we don't really know much about soil as a medium. And even with water we have the same problems. The "known unknowns" are pretty great either way, and scale plays in. Most hydroponics (though there are major exceptions) are run by research organizations or universities, which means there is a lot more free and regular support, particularly from the sciences, than most commercial operations will be able to afford. Its much easier, when things go wrong, to have a cadre of free sciences hovering around. As for "you can grow anything in hydroponics", speaking from work I've done with those systems, you can - but good luck with a lot of it. Plus water filtration becomes an issue, though there are biological ways of handling that (even then you're creating a very limited ecosystem - they can get thrown off ridiculously easily). On the other hand, while light inputs are definitely a notable consideration, light science and "light engineering" is making leaps and bounds. So while I'd say issues with light are writing it off just yet, I wouldn't count on that as the everlasting limiting factor. Along with the various spinning, rotating, window side containers there are also various types of windows, "light tunnels", and even the good ol' basic efficient lighting systems and such to consider. And design, rather than technology, can also contribute - several vertical farm designs "stagger" floors to reduce
  •  
    shading from the building itself. Also, for anyone following alternative agriculture from the technology/commerce/urban ag side, there are two details the Economist got wrong. Sweetwater Organics, featured on NBC a few weeks ago, is already running a commerical hydroponics farm out of an old railroad warehouse. The nutrients for their water chemistry come from fish (poop), who are also raised in tandem with the plants, also for food. Also, at least one vertical farm plan has moved off the drawing board (sort of) into fundraising stages, and the land for it is cleared (both physically and legally) for building. This is at Will Allen's Growing Power, in Milwaukee, WI. Will, the "father of modern urban agriculture" and a frequent visitor to the White House with Michelle Obama's "Let's Move" program, is hoping to build the five story building within a few years. It will be located (and provide food to) in a food desert, in one of Milwaukee's largest low-income housing projects. So the world will soon have a test case for this idea. Other cities may follow, but as far as I know the closest one (in terms of multiple floors of greenhouses) is planned for Toronto, and is at least two decades out - which probably means its anyone's guess whether it'll happen.
Jim Proctor

Nuclear as Usual: Why Fukushima Will Change Less Than You Think - 1 views

  •  
    One provocative article on the Japan nuclear scare, arguing that its impacts on the global nuclear industry will be minimal.
Laura Schroeder

Around the world on solar power alone - 0 views

  •  
    A brief article about the project PlanetSolar, led by Raphael Domjan, and its efforts to prove that solar power is a viable and wise alternative energy approach, especially in the shipping industry. Domjan has overseen the construction of a solar-powered catamaran with 5,300 square feet of solar panels and hopes that its voyage across the world will encourage a re-examination of fuel efficiency and popularize solar technology.
Kelsey White-Davis

Pain at the pump? We Need More - 1 views

  •  
    Although ideas in the article are unoriginal, it presents an interesting argument that I am not entirely sure is the best method to go about oil dependency. The author is convinced that adding a fee to any greenhouse gas emissions will lead to a new and clean energy system. "This is what motivates changes in behavior and technological investments." Will this monetary burden be enough to change people's habits and lifestyle, or will we become creative in other ways to dance around this dependence? One major critique I have of this proposal is how slow this conversion process will be. It also seems as if we are simply designing a new way to herd the sheep of society without taking a moment to look up and recognize the bigger implications and options.
Kim Vanderklein

The Environmental Endgame: Mainstream Economics, Ecological Disaster, and Human Surviva... - 2 views

In this book The Environmental Endgame: Mainstream Economics, Ecological Disaster and Human Survival, his intention is to first of all provide an accumulation of evidence supporting the theory that...

sustainability climate change technology

started by Kim Vanderklein on 16 Mar 12 no follow-up yet
Lucy Roberts

Neighborhood gets high-tech outreach - 2 views

  •  
    An example of GIS in real life! Danielson Castillo is using geographic information system (GIS) mapping to layer several sets of data on a computerized map. The depth and breadth of the mapping project, completed last month, is unheard of on a community level in Minnesota. The project was funded with a $20,000 grant from the McKnight Foundation, but Danielson Castillo and Matson believe it's a tool that will become increasingly common and affordable for community organizations. Danielson Castillo already has given demonstrations of his GIS map to a number of community organizers.
Micah Leinbach

Wind power: Clean energy, dirty business? - 0 views

  •  
    Perhaps alternative energy technology's most promising industry, wind, is finding itself to be far more controversial as it becomes far more common and popular. Partially, this is just a good old example of showing us how nothing is perfect. But it does beg the question of large scale energy industry period - are those who see no place for that, in any form, on to something?
Allison Curtis

Ecospirituality - J Holist Nurs - 1 views

  •  
    lcenvsfall220 A description of the idea of Ecospirituality with a focus on holistic nursing and healing.
Meghan Cleland

Chicago takes the LEED in eco building | Cities of the Future | Grist - 1 views

  •  
    This article looks at what Chicago is doing to push their development in the green direction. This falls under progressive ecological modernization. It is particularly interesting examining this development in a city that one would more readily associate with the historically negative side of industrialization (birthplace of the skyscraper)
Julia Huggins

FDA Food Safety Modernization Act - 0 views

  •  
    This bill just recently came to my attention. I havent had much time to research it further, but it sounds rather frightening. This YouTube video (http://www.youtube.com/watch?v=gOups0dfdwM&feature=channel) captures the fear based objections to the bill, and though it is propaganda, these are definitely issues we ought to be worried about! The "official summary" of the bill on this posted web site is long but seems to line up with the YouTube clip. Yikes! I propose more research.
Lu'ukia Nakanelua

Telescope on right path to pointing out risky objects - 1 views

  •  
    Pan-STARRS spots its first potentially unsafe asteroid through a telescope a-top Haleakala.
Jim Proctor

U.S. Meat Farmers Brace for Limits on Antibiotics - NYTimes.com - 2 views

  •  
    Upcoming limits on use of antibiotics to promote faster growth in livestock turn out to be far less than many food activists want, and far more than many farmers want. Is there any possibility for getting producers and consumers on the same page?
Julia Huggins

Walmart says thin (solar) is in - 1 views

  •  
    "When Walmart announced on Monday that it would install 15 megawatts' worth of solar arrays on as many as 30 of its stores in California and Arizona, it set out to shape the solar market in more ways than one." Good or bad? Part of me feels like this is fine, "great I'm glad they're helping out." But part of me is also very nervous about this. I dont know if I like the idea of Walmart "green coating" their business. I think we're planning on talking about this in class Thursday.
Jim Proctor

Why Energy Efficiency Does not Decrease Energy Consumption - 2 views

  •  
    Here's one of those studies that apparently shatters our intuition: energy efficiency won't help reduce the use of energy??  Read on for the reason why, all about the "rebound effect" and indirect vs. direct energy consumption.  Again, looks like sustainability requires that we address the bigger picture.
  •  
    This brings up some concerns I have about the environmental movement in general. I often feel like our emphasis is in the wrong place. Even before it was acceptable to question environmental activism (without being labeled a no-good capitalist hippie-hater) I have felt uncomfortable with some of the campaigns and goals out there. Alternative Energy is a key one for me. I dont think we have an energy source crisis, I think we have an energy use crisis. I dont just mean "energy use" in terms of petroleum (CO2 emitting) energy either. Even if we find alternate energy sources (like the solar panels article I posted on the LCENVS220 group), or more efficient machines/lights, we still will expect the same (or more) amount of work to be done from external energy sources. I think we should focus on realizing what energy already exists in our natural systems and learn to synchronize with that to accomplish our goals, instead. This, I think, will address broader (and dare I add more important?) problems than CO2 emissions.
‹ Previous 21 - 40 of 86 Next › Last »
Showing 20 items per page