By Dawn StoverPosted 11.01.2007 at 10:12 am 0 Comments
It's a vicious cycle: Global warming is increasing the chances of wildfires, and now we know the reverse is also true. Scientists have confirmed that wildfires release large amounts of heat-trapping carbon dioxide into the atmosphere. That's no surprise, but the amounts are jaw-dropping: Big fires like the recent ones in California can belch out as much carbon dioxide in a few weeks as all of the state's motor vehicle traffic does in a year.
Christine Wiedinmyer of the National Center for Atmospheric Research and Jason Neff of the
University of Colorado used satellite observations of fires and a new
computer model to estimate carbon dioxide emissions based on the amount of vegetation burned. The California fires broke out after their paper, published online yesterday in
the journal Carbon Balance and Management, was already written. However, a preliminary calculation by Wiedinmyer suggests that the fires emitted
7.9 million metric tons of carbon dioxide in just the one-week period
of October 19-26. That's about 25 percent of the average
monthly emissions from all fossil fuel burning throughout California.—Dawn StoverImage: Jeff Turner, Wildfire in Santa Clarita
More than ever, consumer electronics are defined by disposability. Cameras become obsolete nearly as soon as they appear. Computers, MP3 players and cellphones are endlessly churned out and touted as necessary replacements for current models (or their non-replaceable batteries die). In the frenzy for the latest and greatest, we often forget that what we throw out does not disappear, is not magically recycled. Instead there are close to 40 million metric tons of it floating around, poisoning water supplies, contaminating soil, and exposing to health risks people in developing countries who earn a living dismantling and salvaging the electronic waste that ends up in their backyards. Could a global initiative led by some of the worst offenders solve the problem?
Yesterday marked the formal launch of StEP (Solving the E-waste Problem), a program headed by the United Nations to unite a number of manufacturers, governments, universities and NGOs from around the world to create standards that would lessen the environmental and health effects of our current approach to electronics. Besides attempting to standardize recycling practices to harvest from discarded gadgets valuable components (such as indium, a by-product of zinc mining primarily used to create transparent electrodes such as those in LCD screens and which is now more valuable than silver), the initiative focuses on making devices less likely to be thrown out in the first place. The industry members, including Dell, Hewlett-Packard and Microsoft, will work to design better-quality products with parts that can be more easily upgraded on an individual basis.
So will the program actually amount to anything, considering that the consumer-electronics industry lives and dies by the cycle of constant upgrades? Well, its not too promising that Microsoft has spent the past month under fire after analysts reported that the Vista operating systems strict upgrade requirements could send millions of PCs to the landfill in the coming years—10 million PCs in the U.K. alone. But it certainly might be a start, encouraging manufacturers to create better products and consumers to consider the consequences of their purchasing decisions. In the meantime, though, well settle for a Frankenpod. —Abby Seiff