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Věda a technika - Hlavní události ve vědě - Hlavní události - 15. března 2019

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Strana: 1/ 25 Celkem nalezeno 243 záznamů.

Receding Chilean glacier a sign of accelerating climate change


media thumbnail In the space of just two weeks, two large icebergs broke off the Grey Glacier in Chilean Patagonia—a sign of accelerating climate change, experts say. Číst dále >>> Přeložit do en

The Violence Of The New Zealand Mosque Shooting Is Amplified Online


Watch Video Posting on sites like Facebook, YouTube, Twitter and Instagram, the alleged shooter of two New Zealand mosques is the latest to leverage social media to spread violence and extremism online.Before the attack, police say the alleged gunman posted a racist and Islamophobic manifesto on social media. The attack itself was announced on message boards, and then live-streamed on Facebook. The graphic 17-minute recording of the shooting spread quickly online after.Tech companies like Twitter, Google and Facebook have announced efforts to remove the attacker's posts and accounts. And representatives from Reddit told the  Washington Post  the company was "actively monitoring the situation" and removing the video as well.Despite those efforts, the gruesome video is still constantly being  re-uploaded to YouTube . The manifesto is still hosted on sites with little to no oversight. And ultimately, the extremist ideology of the alleged attacker is spreading — and it's worth questioning if these platforms could have stopped it."What I would like to do is have an open and honest and frank conversation about the role of Facebook in society. ...We are seeing it weaponized by terrorists and extremist groups, we are seeing it weaponized by people who are exploiting young children, we are seeing it weaponized by bullying, we are seeing it weaponized by drug dealers and people trafficking in illegal weapons."Hany Farid of the Counter Extremism Project may be talking specifically about Facebook there — but it highlights the broader issue of how major internet platforms can amplify hatred and violence.In 2015, a white supremacist  self-radicalized  by online neo-Nazi propaganda killed nine African-Americans in a church in Charleston, South Carolina. Months later, an attacker  live-streamed his murder  of two Virginia journalists. And just last year, before killing 11 Jews at a Pittsburgh synagogue, the shooter regularly posted  hate speech  online.While these shootings are alarming on their own, their connections to online spaces paint a scary picture of how extremism and violence permeate in the digital age.After the mosque massacre in New Zealand, a  New York Times  columnist referred to it as "an internet-native mass shooting, conceived and produced entirely within the irony-soaked discourse of modern extremism."  The Verge  noted the manifesto contained "buzzwords meant to galvanize its spread.""The platforms have to be held more responsible for the weaponization of their platform, whether that's due to extremism, child exploitation, illegal drugs, illegal weapons, etc. And so, I think that there is a line where we can allow for innovation, allow for free expression but minimize some of the damage we have been seeing to society over the last few years."Despite years of warnings from terrorism experts and organizations like the  Southern Poverty Law Center , the online infrastructure that perpetuates extremism still exists — and the New Zealand gunman's attack will likely continue traveling through it.Additional reporting from  Newsy affiliate CNN . Číst dále >>> Přeložit do en

Jury rules Apple owes Qualcomm $31M for patent infringement


media thumbnail A jury has decided Apple should pay $31 million in damages for infringing on patents for technology owned by mobile chip maker Qualcomm that helps iPhones quickly connect to the internet and extend their battery life. Číst dále >>> Přeložit do en

NASA sees development of Tropical Depression 03W near Yap


media thumbnail Visible imagery from NASA's Terra satellite revealed 03W that formed near the island of Yap in the Northwestern Pacific Ocean. Číst dále >>> Přeložit do en

Satellite sees Tropical Cyclone Savannah moving away from Indonesia


media thumbnail Tropical Cyclone Savannah continued to move in southerly direction in the Southern Indian Ocean, and move away from Indonesia. NASA-NOAA's Suomi NPP satellite provided a visible image of the storm. Savannah is no threat to land areas. Číst dále >>> Přeložit do en

Researchers measure near-perfect performance in low-cost semiconductors


media thumbnail Tiny, easy-to-produce particles, called quantum dots, may soon take the place of more expensive single crystal semiconductors in advanced electronics found in solar panels, camera sensors and medical imaging tools. Although quantum dots have begun to break into the consumer market—in the form of quantum dot TVs—they have been hampered by long-standing uncertainties about their quality. Now, a new measurement technique developed by researchers at Stanford University may finally dissolve those doubts. Číst dále >>> Přeložit do en

Nitrogen pollution's path to streams weaves through more forests (and faster) than suspected


media thumbnail Nitrogen in rain and snow falls to the ground where, in theory, it is used by forest plants and microbes. New research by a scientific collaboration led by the USDA Forest Service shows that more nitrogen from rain and snow is making it to more streams than previously believed and flowing downstream in forests of the United States and Canada. The study, "Unprocessed atmospheric nitrate in waters of the Northern Forest Region in the USA and Canada," was published this week in the journal Environmental Science & Technology. Číst dále >>> Přeložit do en

Dormant viruses activate during spaceflight


media thumbnail Herpes viruses reactivate in more than half of crew aboard Space Shuttle and International Space Station missions, according to NASA research published in Frontiers in Microbiology. While only a small proportion develop symptoms, virus reactivation rates increase with spaceflight duration and could present a significant health risk on missions to Mars and beyond. Číst dále >>> Přeložit do en

Strana: 1/ 25 Celkem nalezeno 243 záznamů.

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