25 Years of Satellite Data Shows Global Warming Is Accelerating Sea Level Rise
An anonymous reader quotes a report from The Associated Press: Melting ice sheets in Greenland and Antarctica are speeding up the already fast pace of sea level rise, new satellite research shows. At the current rate, the world's oceans on average will be at least 2 feet (61 centimeters) higher by the end of the century compared to today, according to researchers who published in Monday's Proceedings of the National Academies of Sciences. Sea level rise is caused by warming of the ocean and melting from glaciers and ice sheets. The research, based on 25 years of satellite data, shows that pace has quickened, mainly from the melting of massive ice sheets. It confirms scientists' computer simulations and is in line with predictions from the United Nations, which releases regular climate change reports. Of the 3 inches (7.5 centimeters) of sea level rise in the past quarter century, about 55 percent is from warmer water expanding, and the rest is from melting ice. But the process is accelerating, and more than three-quarters of that acceleration since 1993 is due to melting ice sheets in Greenland and Antarctica, the study shows.
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Skype Can't Fix a Nasty Security Bug Without a Massive Code Rewrite
ZDNet reports of a security flaw in Skype's updater process that "can allow an attacker to gain system-level privileges to a vulnerable computer." If the bug is exploited, it "can escalate a local unprivileged user to the full 'system' level rights -- granting them access to every corner of the operating system." What's worse is that Microsoft, which owns Skype, won't fix the flaw because it would require the updater to go through "a large code revision." Instead, Microsoft is putting all its resources on building an altogether new client. From the report: Security researcher Stefan Kanthak found that the Skype update installer could be exploited with a DLL hijacking technique, which allows an attacker to trick an application into drawing malicious code instead of the correct library. An attacker can download a malicious DLL into a user-accessible temporary folder and rename it to an existing DLL that can be modified by an unprivileged user, like UXTheme.dll. The bug works because the malicious DLL is found first when the app searches for the DLL it needs. Once installed, Skype uses its own built-in updater to keep the software up to date. When that updater runs, it uses another executable file to run the update, which is vulnerable to the hijacking. The attack reads on the clunky side, but Kanthak told ZDNet in an email that the attack could be easily weaponized. He explained, providing two command line examples, how a script or malware could remotely transfer a malicious DLL into that temporary folder.
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Source: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/9oKEh_HXSXE/skype-cant-fix-a-nasty-security-bug-without-a-massive-code-rewrite
Facebook Lost Around 2.8 Million US Users Under 25 Last Year
According to new estimates by eMarketer, Facebook users in the 12- to 17-year-old demographic declined by 9.9 percent in 2017, or about 1.4 million total users. That's almost three times more than the digital measurement firm expected. There were roughly 12.1 million U.S. Facebook users in the 12- to 17-year-old demographic by the end of the year. Recode reports: There are likely multiple reasons for the decline. Facebook has been losing its "cool" factor for years, and young people have more options than ever for staying in touch with friends and family. Facebook also serves as a digital record keeper -- but many young people don't seem to care about saving their life online, at least not publicly. That explains why Snapchat and Instagram, which offer features for sharing photos and videos that disappear, are growing in popularity among this demographic. Overall, eMarketer found Facebook lost about 2.8 million U.S. users under 25 last year. The research firm released Facebook usage estimates for 2018 on Monday, and expects that Facebook will lose about 2.1 million users in the U.S. under the age of 25 this year.
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Qualcomm Snapdragon 845 Benchmarks Show An Incredible GPU, Faster CPU
MojoKid writes: Though the company has been evangelizing its new Snapdragon 845 Mobile Platform for a while now, Qualcomm is lifting the veil today on the new chip's benchmark performance profile. At the heart of the Snapdragon 845 is the new Kyro 385 CPU, which features four high-performance cores operating at 2.8GHz and four efficiency cores that are dialed back to 1.7GHz, all of which should culminate in a claimed 25 percent uplift over the previous generation Snapdragon 835, along with improved power efficiency. In addition, the Snapdragon 845's new Adreno 630 integrated GPU core should deliver a boost in performance over its predecessor as well, with up to a 30 percent increase in graphics throughput, allowing it to become the first mobile platform to enable room-scale VR/AR experiences. Armed with prototype reference devices, members of the press put the Snapdragon 845 through its paces and the chip proved to be anywhere from 15 to 35 percent faster, depending on workloads and benchmarks, with graphics showing especially strong. Next-generation Android smartphones and other devices based on the Snapdragon 845 are expected to be unveiled at Mobile World Congress in Barcelona at the end of this month.
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SpaceX's Falcon Heavy Center Booster Lacked Ignition Fluid To Light Engines and Land On Platform
An anonymous reader quotes a report from Los Angeles Times: The center core booster of SpaceX's Falcon Heavy didn't land on a floating sea platform as intended during last week's first test flight because it ran out of ignition fluid, company Chief Executive Elon Musk said Monday. Musk took to Twitter on Monday morning to give a few more updates on the Falcon Heavy's first flight. After liftoff, the rocket's two side boosters touched down simultaneously on land, eliciting cheers and applause from the crowd of SpaceX employees gathered in the company's Hawthorne headquarters, as seen on the launch livestream. Those two boosters, which were used in previous launches of SpaceX's workhorse Falcon 9 rocket, will not be reused again, Musk said in a post-launch news conference last week. But the center core booster ended up hitting the Atlantic Ocean at 300 mph and about 328 feet from the floating platform where it was supposed to land. Musk said Monday that there wasn't enough ignition fluid to light the outer two engines of the booster "after several three engine relights."
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Trump's New Infrastructure Plan Calls For Selling Off Two Airports
The Trump administration has released an infrastructure plan on Monday that proposes that the federal government considers selling off Ronald Reagan Washington National Airport and Washington Dulles International Airport. According to Trump's blueprint, the administration wants to allow federal agencies to divest assets if they "can demonstrate an increase in value from the sale would optimize the taxpayer value for federal assets." It also includes the George Washington and Baltimore Washington parkways, the Washington Aqueduct and the transmission assets of the Tennessee Valley Authority and Bonneville Power Administration on the list for "potential divesture." Politico reports: State and local agencies or the private sector may be better at managing assets currently owned by the federal government, the administration argues, and federal agencies should be able to "identify appropriate conditions under which sales would be made." They should also "delineate how proceeds would be spent." Under the administration's proposal, federal agencies would have to complete an analysis demonstrating an "increase in value from divestiture." Though technically owned by the federal government, both airports are operated by the Metropolitan Washington Airports Authority under a long-term lease agreement. The 53-page infrastructure plan lays out a vision to turn $200 billion in federal money into $1.5 trillion for fixing America's infrastructure by leveraging local and state dollars and private investment. "The White House says its plan will create $1.5 trillion for repairing and upgrading America's infrastructure," reports CNNMoney. "Only $200 billion of that, however, would come from direct federal spending. The rest is supposed to come from state and local governments, which are expected to match any federal allocation by at least a four-to-one ratio. States have gradually assumed more of the responsibility for funding infrastructure in recent years, and the White House says it wants to accelerate that trend." As for how the money would be split up, the plan says that half of the new federal money, $100 billion, "would be parceled out as incentives to local government entities," reports CNNMoney. "An additional $20 billion would go toward 'projects of national significance' that can 'lift the American spirit,'" while another $50 billion will be designated "for rural block grants, most of which will be given to states according to a formula based on the miles of rural roads and the rural population they have," reports CNNMoney. "The rest of the money would support other infrastructure-related undertakings..."
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