Imagine a boat that coasts along almost silently and works completely on free energy. OK, well, almost free: when it is cloudy out you may have to pedal a bit to get it going. Still, you get to toss out the pricey gas costs associated with most water cruisers and relax in the sun when the weather is nice and pedal your way to shore when it isn’t. (more…)
It is all too easy to get excited about the next big sustainable technology for saving energy or producing non-polluting power - and forget the flaws in many of these ideas. Some of the best projects show smart out-of-the-box thinking but lack feasibility or, in some cases, might do more harm than good. While these ideas may not work at least scientists, politicians and other innovators are beginning to explore alternatives.
When it comes to vehicles, green can mean many things. Many supposedly environmentally friendly vehicles also aren’t as green as people might assume at first glance. These three articles provide some facts, figures and humorous anecdotes about what it really means to go green.
Everything You Know about Green Cars is Wrong: Much of what you think you know about “clean cars” is wrong, misinformation spread by word of mouth and unreliable blogs (not including this one). Here are some of the prime misconceptions, with corrections applied:
More On Coskata’s $1 per Gallon Ethanol: The Coskata process that GM is promoting can use a wide range of different feedstocks to produce ethanol. Materials ranging from agricultural waste to purpose grown crops that can be raised on marginal lands (switchgrass being the most widely known example of this) to waste materials such as old tires and even municipal waste streams can all be used as the raw materials that can be turned into ethanol with very little to zero landfill waste.
Top 5 Unusually Green Vehicles of 2007: As demand for environmental alternatives grows, some green-thinking automotive designers have gone above and beyond simple hybrid or energy-efficient cars to develop radically creative green vehicles in many senses of the word. Here are five of the most interesting, innovative, strange and downright bizarre green concept vehicles developed this past year.
Electric scooters are something we’ve come to expect, just like hybrid cars and electric buses, but what about a solar airplane? Yes, the jokes about cloudy days in the sky will no doubt abound, but the endeavor is entirely serious. From concept to construction, the Solar Impulse has been hailed as a savior—the first major attempt to fly a plane without fuel, with eco-eyes set on a sun-powered trip around the globe. And for record-setting adventurer Bertrand Piccard Monday’s unveiling of its prototype was a long time coming: He showed off a mock-up of the Solar Impulse at the 2005 Paris Airshow, but now the 201-ft. plane is set for a test flight next fall. What’s next, a wind-powered submarine?
Remember that amazing device from Back to the Future that converted garbage into fuel? Nowadays that isn’t as far-fetched as it once was. Everything from liquor and saltwater to diapers to landfills are being used to generate alternative sources of power that run equipment, vehicles and buildings around the world!
Confiscated Booze Converted into Bus-Powering Biogas: nearly 200,000 gallons of smuggled alcohol is snagged by authorities on its way into Sweden each year. Instead of simply pouring it down the drain, however, authorities have come up with an alternative use for all of the confiscated beverages. The biogas created from the mixed cocktail of smuggled goods is used to power a variety of vehicles, including buses an a train. In this win-win situation, customs is glad to be rid of the excess liquid and the country benefits from the fuel produced as a result of the process.
Dirty Diapers Turned into Viable Diesel: one company has a brilliant (albeit offbeat) idea for turning what would normally be landfill material into cost-effective, synthetic diesel fuel. Approximately 30,000 tons of diapers will be annually transformed into over 10,000 tons of diesel fuel at jut 50 cents per liter. Larger schemes to transform a variety of to-be-landfilled materials have come up short, due to “some of the issues that come up [in relationship to] the consistency of the material you’re putting through. One of the beauties of the diaper is that it is going to be a very consistent input. The other beauty of it is because this whole thing works in a closed system, there are no emissions.”
Saltwater Burned into Hydrogen and Oxygen: Four years ago, inspiration struck in the middle of the night. A researcher decided to try using radio waves to kill cancer cells. Instead, John Kanzius discovered that his radio frequency generator could release the oxygen and hydrogen from saltwater and create an incredibly intense flame. His wife Marianne heard the noise and found her husband inventing a radio frequency generator with her pie pans. Experts say his invention could turn into “a steam engine, a steam turbine. That could become a car engine if you wanted it to be.” The following interview shows the process in action:
Methane Gas Siphoned from Garbage Dumps: decomposing waste gives off methane, which can be cleverly harvested rather than merely wasted. The increased interest in salvaging this valuable fuel source is also due in part to the environmental impact of burning it off, which is the traditional method of preventing dangerous gas buildups. Recently, researches have gone so far as to propose and implement methods of increasing methane production within a closed landfill system to get as much fuel as possible from the decomposition process. More information on gas-from-trash available here and here.
Vehicles Powered by Vegetable Oil and Ammonia: on a smaller scale, industrious individuals have used some unlikely materials to power test vehicles, though their small-time successes could have a larger impact if more widely adopted. One experimental truck has been converted to run on ammonia. The result: cheaper fuel, lower emissions and better guess mileage. Meanwhile, a lawyer in Massachusetts purchased a used ambulance, painted it green (for a groan-worthy visual pun effect), rigged it to run on vegetable oil and now gets to travel over 300 miles for just $3.
