Tecnologia

Greenland's ice sheet melting faster than thought - research

Greenland's ice sheet melting faster than thought - research

Climate change has forced the melting of Greenland's mile-thick ice sheet into "overdrive", threatening to boost global sea levels to risky levels. The increased melting began around the same time humans started altering the atmosphere in the mid-1800s, said Trusel, lead author of a study of the meltwater runoff that was published Wednesday in the journal Nature . Consulte Mais Informação

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US coal consumption drops to lowest level since 1979

US coal consumption drops to lowest level since 1979

U.S. coal consumption in 2018 is expected to be the lowest since 1979 and fall further still next year, as a near-record number of coal plants closed in 2018, according to a December 4 report by the Energy Information Administration. The shale boom created a glut of cheap natural gas in America, and the costs to deploy wind and solar continue to plunge. They often referred to it as a "war on coal". Consulte Mais Informação

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NASA’s OSIRIS-REx Spacecraft Arrives at Asteroid Bennu

NASA’s OSIRIS-REx Spacecraft Arrives at Asteroid Bennu

The primary mission of OSIRIS-REx is to gather sample materials from the carbon-rich surface of Bennu and send it back to Earth for scientific analysis. For two years after the return, the sample will be cataloged and analyzed. OSIRIS-REx is the third mission in NASA's New Frontiers Program, which is managed by NASA's Marshall Space Flight Center in Huntsville, Alabama for the agency's Science Mission Directorate in Washington. Consulte Mais Informação

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World 'way off course,' United Nations warns at crunch climate summit

World 'way off course,' United Nations warns at crunch climate summit

Without drastic action, there will be catastrophic consequences, he warned. Guterres called climate change "the most important issue we face". Duda, the Polish leader, said participants at the conference have backed its proposal of a "just transition" away from coal mining, which calls for helping those people, like coal miners, who are slated to lose their jobs as the world changes its energy mix. Consulte Mais Informação

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IL tornadoes: Residents start to pick up the pieces after deadly twisters

IL tornadoes: Residents start to pick up the pieces after deadly twisters

One of the towns hardest hit was Taylorville, about 25 miles southeast of Springfield. The storms wrecked houses, downed power lines and pulled up trees by their roots. "Internet service, phone service, the ability to monitor the weather, the ability to track resources and things like that, so that's the type of support that asset will provide", said Buckingham. Consulte Mais Informação

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NASA spacecraft arrives at ancient asteroid Bennu after two-year chase

The spacecraft will also carry a laser altimeter, a suite of cameras provided by the University of Arizona, spectrometers and lidar, which is similar to radar, using light instead of radio waves to measure distance. To their delight, newly acquired close-ups of the asteroid closely match their predictions. OSIRIS-REx and its instruments. Even the faint pressure of sunlight warming the spacecraft can create sufficient thrust to warp its orbit. Consulte Mais Informação

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Soyuz rocket launches astronauts to the International Space Station

Soyuz rocket launches astronauts to the International Space Station

NASA said, the launch comes less than two months after a booster failure forced a Soyuz spacecraft carrying Russian cosmonaut Alexey Ovchinin and United States astronaut Nick Hague to make an emergency landing. It is the first mission since an aborted launch in October. "We feel very ready for it", she said. A Russian investigation attributed the failure to a sensor that was damaged during the rocket's final assembly. Consulte Mais Informação

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Chinese Scientist Claims to Create World's First Gene-Edited Twins

Chinese Scientist Claims to Create World's First Gene-Edited Twins

The technique carries the risk that altered DNA will warp other genes - potentially risky mutations that may then be passed down to future generations. Dr He Jiankui revealed the birth of the baby twin girls ahead of a major genome editing conference in Hong Kong . He's experiment "crossed the line of morality and ethics adhered to by the academic community and was shocking and unacceptable", Xu said. Consulte Mais Informação

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Long-term global warming trend continues with devastating effect

Long-term global warming trend continues with devastating effect

Other signs of climate change including sea level rises, the oceans warming and becoming more acidic as they absorb carbon emissions, sea ice and glacier melting, and more extreme weather, have all been seen this year. "Every extra bit matters". A United Kingdom assessment published on 26 November warned summer temperatures could be up to 5.4C (9.7F) hotter and summer rainfall could decrease by up to 47 per cent by 2070. Consulte Mais Informação

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Donald Trump branded ‘IDIOTIC’ after revealing he DOESN’T BELIEVE climate change report

Donald Trump branded ‘IDIOTIC’ after revealing he DOESN’T BELIEVE climate change report

The report also warns climate change could cost the USA economy hundreds of billions of dollars and thousands of lives every year in the future without prompt action. It quoted the president saying, "You look at our air and our water, and it's right now at a record clean". This is acknowledging that the USA has achieved more than what would have been required of it in emissions reduction under the Paris climate accords, but virtually no other country in the world has . Consulte Mais Informação

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Draper Tapped For NASA's 'Space Race' To Go Back To The Moon

Draper Tapped For NASA's 'Space Race' To Go Back To The Moon

While Bridenstine was gung-ho about utilising commercial outfits to get NASA's science to the moon , he was less confident about his private partners getting NASA's astronauts to the International Space Station (ISS) any time soon. His Space Policy Directive 1 , signed last December, directs NASA to collaborate with the private sector in returning to the Moon en route to a longer-term mission to Mars. Consulte Mais Informação

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