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Aug 21, 2018
Supersized solar farms are sprouting around the world (and maybe in space, too)
Posted by Genevieve Klien in categories: solar power, space, sustainability
In a quest to cut the cost of clean electricity, power utilities around the world are supersizing their solar farms.
Nowhere is that more apparent than in southern Egypt, where what will be the world’s largest solar farm — a vast collection of more than 5 million photovoltaic panels — is now taking shape. When it’s completed next year, the $4 billion Benban solar park near Aswan will cover an area 10 times bigger than New York’s Central Park and generate up to 1.8 gigawatts of electricity.
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Aug 21, 2018
SpaceX and NASA Settle Clash Over Astronaut Safety
Posted by Genevieve Klien in category: space travel
Aug 21, 2018
Bank of England’s chief economist warns A.I. could threaten ‘large’ amount of jobs
Posted by Derick Lee in categories: economics, employment, finance, robotics/AI
“This is the dark side of technological revolutions and that dark side has always been there,” Haldane added. “That hollowing out is going to be potentially on a much greater scale in the future, when we have machines both thinking and doing — replacing both the cognitive and the technical skills of humans.”
Haldane said that the so-called Fourth Industrial Revolution — a digitally-driven paradigm shift similar to previous industrial revolutions in the West — had the potential to displace numerous jobs and leave people “technologically unemployed.”
“Each of those [industrial revolutions] had a wrenching and lengthy impact on the jobs market, on the lives and livelihoods of large swathes of society,” Haldane told the BBC.
Aug 21, 2018
Ecosystems are getting greener in the Arctic
Posted by Bill Kemp in categories: climatology, sustainability
In recent decades, scientists have noted a surge in Arctic plant growth as a symptom of climate change. But without observations showing exactly when and where vegetation has bloomed as the world’s coldest areas warm, it’s difficult to predict how vegetation will respond to future warming. Now, researchers at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) and UC Berkeley have developed a new approach that may paint a more accurate picture of Arctic vegetation and our climate’s recent past – and future.
In a study published online Aug. 20 in Nature Climate Change, the researchers used satellite images taken over the past 30 years to track – down to a pixel representing approximately 25 square miles – the ebb and flow of plant growth in cold areas of the northern hemisphere, such as Alaska, the Arctic region of Canada, and the Tibetan Plateau.
The 30-year historic satellite data used in the study were collected by the National Oceanic and Atmospheric Administration’s Advanced Very High Resolution Radiometer. The data was processed by Boston University, and is hosted on NEX – the NASA Earth Exchange data archive.
Aug 21, 2018
Researchers are developing fast-charging solid-state batteries
Posted by Bill Kemp in categories: climatology, materials
Solid-state batteries contain no liquid parts that could leak or catch fire. For this reason, they do not require cooling, and are considered to be much safer, more reliable, and longer lasting than traditional lithium-ion batteries. Juelich scientists have now introduced a new concept that allows currents up to 10 times greater during charging and discharging than previously described in the literature.
Low current is considered one of the biggest hurdles in the development of solid-state batteries because the batteries take a relatively long time to charge, usually about 10 to 12 hours in the case of a fully discharged battery. The new cell type that Jülich scientists have designed, however, takes less than an hour to recharge.
“With the concepts described to date, only very small charge and discharge currents were possible due to problems at the internal solid-state interfaces. This is where our concept based on a favourable combination of materials comes into play, and we have already patented it,” explains Dr. Hermann Tempel, group leader at the Juelich Institute for Energy and Climate Research (IEK-9).
Aug 21, 2018
New study identifies strategies in US climate litigation
Posted by Bill Kemp in categories: climatology, health, policy, sustainability
The courts have played a central role in climate change policy, starting with a landmark Supreme Court case that led to the mandatory regulation of greenhouse gases in the United States. How do the courts address climate cases today? Who wins, who loses and what kinds of strategies make a difference in the courtroom?
Researchers at the George Washington University (GW) have published a study in Nature Climate Change that for the first time analyzes all U.S climate change lawsuits over a 26-year period.
“This first-of-a-kind study outlines the types of climate change lawsuits that are more likely to win or lose, and why,” said lead author Sabrina McCormick, Ph.D., MA, an Associate Professor of Environmental and Occupational Health at GW’s Milken Institute School of Public Health (Milken Institute SPH). “Efforts to affect U.S. climate change policy should consider current trends in the courtroom.”
Aug 21, 2018
Rethinking the Mars terraforming debate
Posted by Klaus Baldauf in categories: engineering, environmental, space
In late July, Bruce Jakosky and Christopher Edwards published a paper titled “Inventory of CO2 available for terraforming Mars,” which was sponsored by NASA. The paper analyzed the amount of volatiles, primarily carbon dioxide (CO2), on or in Mars currently, and concluded reasonably that there are not enough volatiles available on Mars to terraform it sufficiently for a person to not need a pressure suit. Jakosky is the principal investigator for MAVEN, the NASA Mars orbiter studying the planet’s atmosphere. He and his co-author wrote what is technically an accurate paper, in spite of what was an existing mild controversy over the amount of some volatiles in the soil and regolith of Mars.
Aug 21, 2018
The Life Extensionist’s Guide to Logical Fallacies
Posted by Nicola Bagalà in category: life extension
A handy guide to logical fallacies for life extensionists.
When debating life extension, or debating in general, it may happen that participants commit logical fallacies—that is, their arguments contain logically invalid reasoning. In practice, this often means that people incorrectly come to certain conclusions that do not actually follow from the premises; if they appear to follow, it’s indeed because fallacious reasoning was used.
Logical fallacies can be tough to spot, both for the people committing them and for the people listening; rejuvenation advocates would therefore benefit from familiarizing with common fallacies committed during debates about life extension so that they will both be able to detect them in other people’s arguments and avoid committing any themselves.
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Aug 20, 2018
Beijing Enjoys the Bluest Skies in a Decade
Posted by Bill Kemp in category: environmental
Beijing residents have been breathing some of the cleanest air in a decade as they begin to reap the benefits of China’s anti-smog push.