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Jun 5, 2019

Death redefined: how pig brain function was restored after slaughter

Posted by in category: neuroscience

Brain death isn’t the end… at least, not for the slaughtered pigs who had their brains revived, thanks a new technique.

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Jun 5, 2019

Chinese scientists find 5 million tons of lithium deposits in Yunnan

Posted by in category: chemistry

Chinese scientists have found a major lithium deposit in Southwest China’s Yunnan Province, estimated to contain more than 5 million tons.

There are approximately 40 million tons of proven lithium reserves in the world, the Xinhua News Agency’s Globe magazine reported.

A team led by research fellow Wen Hanjie from the Institute of Geochemistry under the Chinese Academy of Sciences found 340,000 tons of lithium oxide in a test site in central Yunnan.

Continue reading “Chinese scientists find 5 million tons of lithium deposits in Yunnan” »

Jun 5, 2019

3D magnetic interactions could lead to new forms of computing

Posted by in category: computing

A new form of magnetic interaction which pushes a formerly two-dimensional phenomenon into the third dimension could open up a host of exciting new possibilities for data storage and advanced computing, scientists say.

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Jun 5, 2019

‘Iron Man’ actor Robert Downey Jr. has vowed to use robotics and AI to significantly clean up the Earth in the next decade

Posted by in categories: biotech/medical, robotics/AI, space

Robert Downey Jr. doesn’t pretend to be a brilliant scientist — even though he’s played Tony Stark, aka Iron Man, for the past 11 years.

But on Tuesday night he attended Amazon’s brand new, premier, open-to-the-public Machine Learning, Automation, Robotics and Space (re: MARS) conference in Las Vegas — a room filled with AI legends, astronauts, and other dignitaries — as a keynote speaker.

He delivered a gag-filled talk that somehow weaved together the history of the Marvel Cinematic Universe, the evolution of Stark’s Iron Man suits, allusions to his own troubled history with drug addiction, the actual history of artificial intelligence and its pioneers, with a bunch of jokes using the Amazon Alexa voice and Matt Damon (including a videotaped guest appearance by Damon).

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Jun 5, 2019

Can Gene Editing Stop The Bird Flu? Here Is The Latest With Chickens

Posted by in categories: bioengineering, biotech/medical

This study shows how CRISPR gene editing can make chicken cells resistant to the avian influenza virus.

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Jun 5, 2019

Internet shutdowns don’t make anyone safer

Posted by in category: internet

It’s tempting for governments to throttle online access. But the drawbacks are glaring.

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Jun 5, 2019

Deep learning techniques teach neural model to ‘play’ retrosynthesis

Posted by in categories: biotech/medical, engineering, robotics/AI, sustainability

Researchers, from biochemists to material scientists, have long relied on the rich variety of organic molecules to solve pressing challenges. Some molecules may be useful in treating diseases, others for lighting our digital displays, still others for pigments, paints, and plastics. The unique properties of each molecule are determined by its structure—that is, by the connectivity of its constituent atoms. Once a promising structure is identified, there remains the difficult task of making the targeted molecule through a sequence of chemical reactions. But which ones?

Organic chemists generally work backwards from the target molecule to the starting materials using a process called retrosynthetic analysis. During this process, the chemist faces a series of complex and inter-related decisions. For instance, of the tens of thousands of different chemical reactions, which one should you choose to create the target molecule? Once that decision is made, you may find yourself with multiple reactant molecules needed for the reaction. If these molecules are not available to purchase, then how do you select the appropriate reactions to produce them? Intelligently choosing what to do at each step of this process is critical in navigating the huge number of possible paths.

Researchers at Columbia Engineering have developed a based on reinforcement learning that trains a to correctly select the “best” reaction at each step of the retrosynthetic process. This form of AI provides a framework for researchers to design chemical syntheses that optimize user specified objectives such synthesis cost, safety, and sustainability. The new approach, published May 31 by ACS Central Science, is more successful (by ~60%) than existing strategies for solving this challenging search problem.

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Jun 5, 2019

Tiny Robots Carry Stem Cells Through a Mouse

Posted by in categories: biotech/medical, robotics/AI

Using this technique, microrobots could deliver stem cells to hard-to-reach places.

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Jun 5, 2019

How our immune system evolved to take control of our decision-making processes

Posted by in category: biotech/medical

Two new research papers are shedding light on the fascinating relationship between inflammation and behavior, suggesting our immune system can play a significant role in both our motivation and decision-making abilities.

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Jun 5, 2019

Harvard breakthrough shows stem cells can be genetically edited in the body

Posted by in categories: biotech/medical, genetics

We owe our long lives to stem cells, which are nestled deep inside certain tissues in the body and constantly replace old cells. In recent years scientists have been able to correct genetic diseases by removing these stem cells, editing their genomes and then implanting them back into the patient, but that adds complications. Now, new research led by Harvard scientists has successfully edited the genes of stem cells while still in the body.

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