I didn't know about Witricity but that sounds perfect. Charging batteries seems like the bane of our existence, and to worry about your car having juice, as you mention, would be a complete pain. If everything was always charging, this would solve a lot of our device-battery woes, and the electric car problem, too.
oldguywithtoys, first of all, second-generation biofuels that are based on crops are based on non-food crops, for either people or animals, and grown on land that cannot be used to grow food crops on. So they are not at all decreasing the food supply. Second, ethanol and methanol are not the only fuel possibilities. There's also biodiesel and butane, among others. I do agree that federal subsidies for cellulosic-based biofuels (ethanol, methanol, butane or biodiesel) are a good idea.
Whether a crop is people-food or animal-food or inedible and only useful for creating ethanol or methanol, it still takes land to grow that crop. Whether you divert a corn crop from animal feed to the production of ethanol or you divert a field from growing corn to growing switchgrass, you're still decreasing the food supply to increase the alcohol supply.
My own opinion is "all-the-above" - we need to cut our dependence on imported oil by
finding substitutes and making them cost effective.
increasing domestic production.
increasing the efficiency of everything that uses energy.
So far, the processes used to generate biofuels from plant waste haven't scaled very well. I read somewhere that the federal government has mandated that the oil companies use a certain amount of cellulosic alcohol each year, but that they pay hefty fines simply because nobody has figured out how to make that much cellulosic alcohol in a year.
I'm not saying they'll never be able to figure it out. What I'm saying is that we need to go more with the carrot than the stick - tax credits for research toward the efficient large-scale production of cellulosic alcohol rather than fines for not using what isn't available. And above all, funding for R&D into making everything that uses energy as efficient as possible, as cost-effectively as possible.
oldguywithtoys, I wish everything could be powered by the sun, too. But we're a long way off from that for multiple reasons, and many people would rather start somewhere on alternatives than wait. Meanwhile the biofuels scenario you describe is out of date. Second-generation biofuels are made from plants that are not food crops and don't compete with them (crop-based biofuels), or they're made from the waste from food crops or the waste from other plants (cellulose-based biofuels).
I'll lump ethanol and methanol together: biofuels. As their use increases, their prices (low now more due to government subsidy than production efficiency) will go up. As the production volumes go up, it will be more profitable for farmers to turn their land to the production of ethanol/methanol-producing crops than food and food prices will rise... and petroleum prices will fall. Meanwhile, ethanol and methanol are still hydrocarbons, the burning of which will still produce greenhouse gasses.
Natural gas is a fossil fuel and still produces greenhouse gasses when it burns. When a natural gas pipeline leaks, it doesn't spout black goop all over the landscape, it dissipates into the air. But unburned natural gas is itself a greenhouse gas
The vast majority of our electricity is produced by the burning of fossil fuels and it will take major breakthroughs in battery capacity and solar cell efficiency before wind and solar can replace more than a tiny fraction.
The push by our government should not be to force the use of alternative fuels, but to help fund research to increase the efficiency of solar cells, the capacity of storage batteries and the efficiency of our use of the energy ANY fuels can produce.
Ann, thanks for the clarification. When Google for the same info, it seems that power density, Cost and Vehicle design considerations are some of the constrains. More info will be available with http://en.wikipedia.org/wiki/Solar_vehicle
Ceylon0, thanks for the link. I see several announcements like this every month, in fact, tens of announcements such as this one in a year. I don't usually report on these initial research breakthroughs in possible bioprocessing or pre-treatment technologies because they're years away from a production stage. Let's hope this one pans out.
This slideshow includes several versions of multi-materials machines, two different composites processes including one at microscale, and two vastly different metals processes. Potential game-changers down the line include three microscale processes.
UL is partnering with metals additive manufacturing (AM) supplier EOS to provide AM training to EOS's customers. It's designed to promote correct usage of AM technologies by OEMs and others in manufacturing.
To commemorate Earth Day, we take a look at the state of ocean plastic. If things don't change, by 2050 the oceans will contain more plastic than fish by weight. Here are the problems, as well as some solutions.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.