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Google fetes 40 years of Landsat with new timelapse videos of Earth
Compared to Landsat, which has been beaming photos of our planet since 1972, Mountain View is a cartographic newb. But Google Earth drove geospatial interest into the stratosphere when it launched in 2005 and, with a billion downloads and counting, the company is well placed to celebrate 40 years of Landsat imagery. To do that, it has collaborated with the US Geological Survey and Carnegie Mellon to create a collection of timelapse videos ranging from seasonal snowcover changes across North America to Amazon deforestation. Though the search giant is gradually shifting from relatively low-res 100 feet per pixel Landsat imagery to 8 feet SPOTImage maps, its Google Earth Engine was used to process the vast archive and make it available to the public. To watch a video of the history of the grand dame of satellite imagery and its liaison with Google, head after the break -- or check the source for all the timelapse goodness.
LightSquared faces Congressional hearing over proposed 4G network, submits revised plan
The LightSquared Express rolled in to Washington yesterday, where the House Committee on Science, Space and Technology held a hearing on the company's proposed 4G LTE network and its potential impact on GPS systems. According to some, the ramifications could be disastrous. David Applegate, associate director of natural hazards at the US Geological Survey, told legislators that interference with GPS mechanisms would make it more difficult for authorities to predict floods, landslides and volcanic eruptions, with a representative from the National Oceanic and Atmospheric Administration adding that LightSquared's ground-based mobile network would pose challenges to weather forecasters, as well. The Department of Transportation also chimed in, telling the committee that the network would likely have an effect on systems used to prevent train collisions and, like other administration witnesses, called for further testing. LightSquared Executive Vice President Jeffrey Carlisle, meanwhile, defended his company's proposal, pointing to an amended version submitted to the FCC on Wednesday. In the revised document, LightSquared offered to reduce the network's power levels further, while providing a stable signal for GPS augmentation services to use at higher frequencies. "This is not a zero-sum game," Carlisle said, adding that only 500,000 to 750,000 high-end GPS services would be affected by LightSquared's low-frequency alternative (which, the company claims, will cost an additional $100 million to implement). Any interference issues, he continued, stem from pre-existing receiver problems that the GPS industry should've addressed by now. Most of the lawmakers sitting on the panel acknowledged the need to establish broader wireless coverage, but stressed the importance of doing so without jeopardizing critical transit and emergency response systems, with some calling for additional testing. Carlisle countered that previous tests have provided sufficient feedback, but ultimate approval lies in the hands of the FCC, which has not yet offered a timetable for its decision. Hit up the source link to read LightSquared's revised proposal, in its entirety.
US mineral companies to tech industry: drill, baby, drill
Even if your favorite gadget isn't flaunting them, rare earth metals are vital to all sorts of high-tech gizmos, from your flat-panel TV and computer hard drive to the hefty batteries that power the Toyota Prius. But over 95% of the world's rare earth comes from China; and late last year, China told the world that they'd like to keep the lion's share all to themselves. What will we Westerners do? Well, we could let China continue producing mountains of e-waste on our behalf. But we could also find plenty of rare earth just by digging in our own backyard. According to the U.S. Geological Survey, the United States has over 13 million metric tons of rare earth with concentrated deposits in Mountain Pass, California and Diamond Creek, Idaho. But since the private firms that control those deposits aren't willing to spend the requisite eight years and minimum $500 million to construct a chemical separation plant, Idaho-based U.S. Rare Earths is just sitting on their ore for now, while California's Molycorp Minerals is forced to send their material all the way to China (once again) for processing. "No one wants to be first to jump into the market because of the cost of building a separation plant," former USGS rare earth specialist Jim Hedrick told LiveScience. Should China's export dwindle and the U.S. feel the pinch, that may change, but for now it's good to know that when the global game of StarCraft tells us "not enough minerals," we'll know exactly where to look.
