In mid-July, an astonishing, estimated 97 percent of the ice sheet covering Greenland was melting due to best prices on brand viagra a high temperature dome of we like it buy branded cialis warm air. Scientists at NASA noticed this late in July, and were shocked at what they found.
Most of Greenland is a big ice sheet. In the summer, large areas of its surface melt, though much of the water quickly re-freezes. Under more normal conditions, 40 or 50 percent of the area can have melting, but virtually the viagra buy now entire ice sheet melting was unprecedented. The 97% area was so extraordinary that the scientists who first discovered this initially thought that there was a problem with the satellites providing the data, and they didn't release the information until they had checked their findings with two other instruments.
The melting took place exceptionally rapidly, as well. "The melting spread quickly. Melt maps derived from the three satellites showed that on July 8, about 40 percent of the ice sheet's surface had melted. By July 12, 97 percent had melted."
Scientists are not yet sure how much of an impact this event will have on sea level rise or how the ice sheet will be affected long term. But it is another unusual event that further shows evidence that the climate is not behaving in the cheap cialis with fast delivery ways it has in the past.
A couple weeks ago, Apple announced that it would no longer have its laptops certified under EPEAT (Electronic Product Environmental Asessment Tool), a voluntary industry standard that has been used to advance recyclability and cheap cialis without prescription reduce the use of www.rickgenest.com toxic materials in electronic devices. But now, after enormous outcry against Apple's decision, the company has realized its mistake. On Friday, the company announced "all eligible Apple products are back on EPEAT."
EPEAT was developed in the early 2000s with a consortium of representatives from manufacturers, trade associations, government agencies, and other groups seeking to promote a more environmentally conscious lifecycle for electronic products. Apple was part of the EPEAT Development and Implementation Team, and 40 of its desktops, notebooks and displays have received EPEAT Gold certification.
Speculation has been that withdrawing from EPEAT was because the company's new latops were using glue instead of screws (which would prevent easy disassembly for repair or recycling) to attach batteries inside the case. The reversal may also be due to the requirement that 95% of federal electronics purchases be EPEAT certified.
For years now, the plans for a high-speed rail network in California have been out there, inching forward slowly with occasional financial roadblocks along the way. But now it looks like the first phase will actually start construction soon as a measure to raise funding through a municipal bond sale has passed in the California state legislature.
A recent vote approved the viagra online best price bond sale that will raise $4.5 billion total, with $2.6 billion of that going toward the initial stretch of the rail network. That first phase will be a 130-mile section that connects Madera and Bakersfield in the state's Central Valley. The next phase for the network will be to connect Los Angeles and San Francisco with trains traveling at 220 mph, and then ultimately span all the way from San Diego to Sacramento. The network will include major stops in between and connect into existing railway infrastructure.
The bond sale also includes $1.9 billion for improvements to use levitra regional rail networks like electrifying the Caltrain San Jose - San Francisco commuter line.
As part of a new study on wave power, the University of look there buy kamagra Exeter and Tel Aviv University have come up with a system that predicts the power of waves in order to maximize wave energy devices' ability to generate energy from the sea. The researchers found that this system could potentially double the amount of wave energy generated by a device.
Phys.org reports, "The research focused on point absorbers, commonly-used floating devices with parts that move in response to waves, generating energy which they feed back to the grid. Point absorbers are already known to be much more efficient in the amount of energy they produce if their response closely matches the www.enshift.com force of the waves and www.omroepgroesbeek.nl previous research has looked at trying to viagra for sale no proscription increase this efficiency. However, this is the first study that has focused on increasing the device's efficiency by predicting and controlling internal forces of the device caused by forthcoming waves."
Wave energy potential is huge. It's been estimated that it could power the world twice over and the UK, where this study was conducted, could be powered twice over just by utilizing wave energy generators along its coastlines. So far, wave energy technologies haven't gained traction the way that solar and wind technologies have because the ocean is a very inhospitable place. Wave energy generators have to be able to withstand the force of each wave.
This new system predicts the power of the incoming wave, allowing the www.pneumapaniagua.es device to respond in a way that extracts the most amount of energy. This controlled reaction not only increases the efficiency of the device, but protects it from damage from rough seas. Where most current wave technologies would be shut off during a storm, a prediction system could allow the wave generator to keep operating effectively.
The University of Exeter is now working with Ocean Power Technologies, one of the largest wave energy companies, to further test the results and develop better technologies based on this research.
Swedish Designer Eddi Törnberg has designed the best human-powered work station we've seen yet because unlike other concepts that require you to do things like ride a bike while you're working, it doesn't require a person to do anything more than sit and work. The project, called "Unplugged," powers the various gadgets we use to www.tenasys.com work -- laptops, lamps, etc --through our small constant movements and body heat.
The desk chair is equipped with a metal seat that gets hot as a person emits body heat, but the levitra india pharmacy underside stays cools through a pattern of metal fins. Electricity is produced through the Seebeck Effect where an electric charge is created when a material is hot or warm on one side, but cool on the other.
The other energy-harvesting part of this set up is a rug that lies under the desk that is outfitted with piezoelectric crystals that generate electricity when pressure is applied to them. Each random shuffle, stomp, and rolling back and online meds cialis forth of the chair is a source of electricity.
The final part of Unplugged is plant-powered rather than human-powered. A potted plant provides electrcity through a process similar to a potato battery.
Unplugged is definitely more of a concept than a working product, but if this set-up were put to use, it could generate a nice chunk, though probably not all, of the energy needed to get through the workday.
The new 2013 Chevy Volt, which goes on sale in August, will have added miles to its electric range and greater efficiency overall. GM tinkered with the chemistry of the lithium-ion battery pack as well as its size and composition to get it to an EPA rating of 38 all-electric miles, up from 35 for last year's Volt, getting the car ever closer to its own target of it's cool viagra usa 40 miles of electric range.
The additional range has led to a nice jump in the electric fuel rating to 98 mpg-e from 94 mpg-e. The gas engine will deliver 340 miles of range once the battery has been depleted.
Avoiding specifics, GM's director of Global Battery Systems Engineering Bill Wallace compared the discount drug cialis battery to a cake batter, saying, "We’ve done some work at the cell level to modify the ‘ingredients’ to make a better end result."
The downside of this slightly extended range is that the battery will take a smidgen more time to charge. Using a 120-volt outlet, the battery will charge in 10.5 hours up from 10 and if using a 240-volt charger, drivers will be looking at 4.25 hours up from 4 even.
The good news is that even with upgrades the price of the Volt will remain the same at $39,995.
One of the clearest examples of buy cialis overnight the effects of global warming and climate change is the receding of the Arctic ice cap. The NSIDC indicates that this year's sea ice is already slightly smaller than it was in 2010, which was the previous record for this time of year. It is also smaller than it was in 2007, which was the year that had the legal pharmacy online ice cap shrink to its smallest size in September of that year.
Starting the summer with the smallest Arctic cap on record is not an auspicious sign, for the Arctic or for the planet.
A single-seat, all-electric sea plane has successfully taken its first test flight. The FlyNano was originally designed as a hybrid electric/petrol engine "fun flyer" craft, but with advances in batteries and electric motors since its debut over a year ago, the FlyNano has instead gone all-electric.
The FlyNano features a lightweight carbon-fiber body and has a cruising speed of 87 mph. The rudders are controlled by pedals and the throttle and real cialis steering are controlled by a stick. The one thing it's lacking? A windshield. But the company is using this as a selling point with the philosophy of "feel the wind" and recommending helmet and goggles when flying.
Sea planes aren't exactly high priority on the list of http://www.aumm.nl/buy-viagra-online-uk transportation modes we'd like to see get an all-electric makeover -- it's pretty equal with electric jet skis -- but any transistion away from fossil fuels is welcome and, well, the sea plane is pretty cool.
The Finnish makers of FlyNano hope to get the plane on the market by the end of next year with a price tag of $40,000.
Insect cuticle is a pretty versatile material. Layers of chitin, a biopolymer, are built up to make strong, lightweight material that composes the exoskeleton and wings of insects. Now, scientists from the Wyss Institute for Biologically Inspired Engineering at Harvard University have developed an artificial version of insect cuticle called 'Shrilk' that is as strong as aluminum allow but with only half the www.revistadeteatro.com weight.
Since it is biodegradable, Shrilk is also being investigated for a number of medical uses, including use for sutures that need to be particularly strong and as a scaffold for tissue regeneration. It is also being suggested as a low-cost and biodegradable alternative material for things like trash bags and packaging.
Inspecting wind turbine blades is a dangerous and expensive part of operating a wind farm. But now it may be possible to have robots do the dangerous climbing work, and allow the inspector to stay safely on the ground.
Turbine blades need to be regularly inspected as part of its regular maintenance. We've seen the (catastrophic) videos of what happens when a turbine blade fails. Inspection helps identify blades that need repair or replacement, before further damage occurs.
The robots for this task have been developed in partnership between International Climbing Machines and discount cialis cialis GE. The first tests of the robot were successfully carried out at a wind farm in Texas. In addition to the high-definition cameras the robots currently carry, GE is exploring the use of microwave scanners that could give inspectors an ability to "see inside" the blade and gather more information than a conventional visual inspection.
Comparisons of aerial images between lower- and higher-income neighborhoods show that income inequalities are demonstrated through the number of trees present. Higher income areas have more trees, while less affluent areas also have fewer trees.
"They found that for every 1 percent increase in per capita income, demand for forest cover increased by 1.76 percent. But when income dropped by the same amount, demand decreased by 1.26 percent. That’s a pretty tight correlation. The researchers reason that wealthier cities can afford more trees, both on private and public property. The well-to-do can afford larger lots, which in turn can support more trees."