Fastest computer in the world focused on climate change
The Jaguar XT5 computer, housed at the Oak Ridge National Laboratory in Knoxville, Tenn., and owned by the Department of Energy was just named the fastest computer in the world by the TOP500 list. It has a performance speed of 1.759 petaflops or quadrillions of calculations per second and that power is being focused on solving the issues of climate change. The Jaguar is an open science machine for performing peer-reviewed research. It is being used to create models and simulations for predicting regional climate change, studying enzymes for developing better ethanol and writing algorithms for fast nuclear reactors that would produce less waste. A billion hours of processor time have been scheduled for 2010 by users like the National Oceanic and Atmospheric Administration, the Argonne National Laboratory and the National Science Foundation. If you’re thinking that the fastest computer in the world should be used for other problems too, don’t worry, the Jaguar along with the other supercomputers on the list are also being used for things like nuclear security, developing better medicines and examining the origins of the universe, among other things. Oak Ridge hosts four of the supercomputers on the list, including Kraken which was number three in the world with a speed of 831 teraflops. Where the human brain’s processing performance ends, these supercomputers pick up, allowing tons of information to be sorted, processed and analyzed. With all of the challenges facing us in tackling climate change, it’s nice to have them on our side. via AP
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Five simple steps to save
Saving energy saves money. And with Americans using a million dollars worth of energy every minute of every day of the year, there are a lot ways to save money through simple, smart and more efficient choices. These decisions can also help cut down on the 40,000 pounds of CO2 that is emitted to create all this energy. By following just a few of these tips, you can make a significant dent in your energy bill and help cut thousands of pounds of CO2 emissions. 1. Better refrigeration Refrigerators are the largest users of electricity among household appliances, so consider the following when using or purchasing your fridge. Avoid setting refrigerator temperatures colder than necessary. The Environmental Protection Agency (EPA) recommends that refrigerators be set at 37 degrees F and freezers at 3 degrees F. Make sure the energy saver switch is turned on and check gaskets around the doors to make sure they are clean. Test tightness of the door seal on refrigerators and freezers. If the seal doesn t hold a dollar bill tightly when the door is closed, it s time to adjust or replace the gasket. Water dispensers and icemakers help to maintain a more constant temperature; however they can increase energy use by up to 20 percent. 2. Smarter cooking There are a lot of ways to cook the same dish, so before you buy new appliances, use what you have more effectively. Think about the following when you re in the kitchen, Use the oven when you can instead of the cook top. Surface units heat continuously, but as a rule insulated ovens heat about one-third of the time it is in use. Avoid opening the oven door to peek; oven temperatures can drop as much as 50 degrees every time the oven door is opened. Only use the self-cleaning oven cycle for big cleaning jobs and it is a good idea to start the cycle while the oven is still hot from baking. Use small appliances, such as toaster ovens, microwaves, electric frying pans and crock-pots in place of the oven to save time and energy. 3. Friendlier appliances When you re in the market for new appliances, the first best step is to look for the Energy Star Label. An Energy Star refrigerator, clothes dryer, dishwasher or water heater will save thousands of dollars over the lifetime of the product while conserving resources. Other new appliance considerations, Appliances account for about 20 percent of household energy use. Determine your household needs before purchasing a refrigerator or freezer. One that is too large wastes energy. Top and bottom freezer units are more energy efficient than side-by-side models. Bottom freezer models use about 16 percent less energy and top freezer models use about 13 percent less energy. 4. Lighter lighting We re all sick of hearing the same tip Avoid standard incandescent bulbs . We keep hearing about it for good reason. If every U.S. household replaced one standard light bulb with a compact fluorescent bulb, we could save the same amount of energy as a large nuclear power plant produces in one year. Other lighting considerations, Use one high-watt bulb instead of several low-watt bulbs and use dimmer controls, high-low switches or three-way bulbs to adjust the level of light. For maximum use of natural daylight consider skylights and solar tubes when remodeling or designing new construction. 5. Get the most from your heating and cooling Regardless if you are hesitant to lower the temperature in your house this winter, you should be getting the most of the heat you are pumping into it. The first best and easiest step is to make sure that your air vents, radiators and baseboard registers are unobstructed by furniture, carpeting or window treatments. If air vents are adjustable, set them in the open position in the winter and closed in the summer. Other heating/cooling considerations, Schedule annual tune-ups for the furnace or heat pump. Maintenance checks can help keep the apparatus running smoothly and efficiently. Shade room air conditioners from the sun to reduce workload and either clean or change the filters regularly. Marie Oser is a best-selling author, writer/producer and host of VegTV. Follow Marie on Twitter: http://twitter.com/vegtv Sources: http://powerscorecard.org/scorecard.cfm Pace University, White Plains, NY Special offers and rebates for Energy Star consumers. http://powerscorecard.org/scorecard.cfm Pace University, White Plains, NY More from ecomii: Live large in 65 square feet Catch energy vampires Breaking down the five big energy hogs in your home Save money by going solar What is your carbon footprint? Choose Energy Star appliances for your home
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17 Things You Didn’t Know You Could Rent
From the wacky to the practical, renting instead of buying can save you serious money, as well as benefit the environment.
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Make one of these colorful door draft stoppers to reduce your heating bills.
Tips for stress-free holiday travel
(Photo: Getty Images) One of the best parts of the holiday season is connecting with friends and family. But traveling during the holidays can be a real hassle. Whether you’re taking an afternoon drive or flying across the country, there are plenty of ways to make the trip less stressful. Many of these tips will also save you money and are easier on the planet. Pack light so you don t have to pay for or deal with the hassle of checked luggage. You won t have to arrive at the airport as early, wait around after your flight gets in, or worry about lost bags. It also cuts down on fuel use because the more weight a plane, train, car, or bus carries, the more fuel it uses. So if you re driving, that translates into spending less time and money at the gas pump. OneBag offers many creative tips for lightening your load. Take public transportation to the airport. It s less expensive than taking a car service or paying for parking. Airport parking lots can fill up quickly during peak holiday travel times, and it can be a real nightmare to deal with full lots. Bring your own healthy snacks. You ll avoid waiting on long lines or paying top dollar for sub-par food at the airport. Carry your own water bottle. If the airport has water fountains, it will save you the cost of having to buy overpriced bottled water, which can quickly add up, especially if you re travelling with a family of four. If you can’t find those fountains, you can still ask the flight attendant to fill up your bottle so you don t have to keep asking for water. Carpool with friends or family members who are going to the same destination. It s more fun than travelling alone and having company will help alleviate stress when you hit the inevitable holiday traffic. Planning your trip ahead of time and taking the shortest route possible will also help save you time, money, and the hassle of getting lost. Stay home and use free or inexpensive technology, such as Skype, to connect to far-flung relatives. Environmental journalist Lori Bongiorno shares green-living tips and product reviews with Yahoo! Green’s users. Send Lori a question or suggestion for potential use in a future column. Her book, Green Greener Greenest: A Practical Guide to Making Eco-smart Choices a Part of Your Life is available on Yahoo! Shopping and Amazon.com. Check out Yahoo! Green on Twitter and Facebook.
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