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Facebook has announced some exciting connectivity technologies that will enable the company to provide access to fast and affordable internet service to the next billion people as well as enhance existing infrastructure projects.

The company said that Facebook Connectivity has helped provide quality internet connectivity to over 500M people since 2013. Now, the company aims to enable affordable, high-quality connectivity for another one billion people at less cost and with greater speed by leveraging emerging technologies.

Commenting on the new connectivity technologies during the unveiling, Dan Rabinovitsj, VP of Facebook Connectivity said: “We have seen that economies flourish when there is widely accessible internet for individuals and businesses.”

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After raising almost $3 billion, Ginkgo Bioworks has built the world’s largest DNA factory in a bid to alter the code behind life and replace traditional manufacturing with biology.

#Science #HelloWorld #BloombergQuicktake.
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Continue reading “This DNA Factory Is Aiming to Reprogram the World” | >

Circa 2018 o.o

Rockets with nuclear bombs for propulsion sounds like a Wile E. Coyote cartoon, but it has been seriously considered as an option for the space program. Chemical rockets combust a fuel with an oxidizer within themselves and exhaust the result out the back, causing the rocket to move in the opposite direction. What if instead, you used the higher energy density of nuclear fission by detonating nuclear bombs?

Detonating the bombs within a combustion chamber would destroy the vehicle so instead you’d do so from outside and behind. Each bomb would include a little propellant which would be thrown as plasma against the back of the vehicle, giving it a brief, but powerful push.

Continue reading “Project Orion: Detonating Nuclear Bombs For Thrust” | >

It sounds like a scene from a spy thriller. An attacker gets through the IT defenses of a nuclear power plant and feeds it fake, realistic data, tricking its computer systems and personnel into thinking operations are normal. The attacker then disrupts the function of key plant machinery, causing it to misperform or break down. By the time system operators realize they’ve been duped, it’s too late, with catastrophic results.

The scenario isn’t fictional; it happened in 2,010 when the Stuxnet virus was used to damage nuclear centrifuges in Iran. And as ransomware and other cyberattacks around the world increase, system operators worry more about these sophisticated “false data injection” strikes. In the wrong hands, the computer models and data analytics—based on artificial intelligence—that ensure smooth operation of today’s electric grids, manufacturing facilities, and power plants could be turned against themselves.

Purdue University’s Hany Abdel-Khalik has come up with a powerful response: To make the computer models that run these cyberphysical systems both self-aware and self-healing. Using the background noise within these systems’ data streams, Abdel-Khalik and his students embed invisible, ever-changing, one-time-use signals that turn passive components into active watchers. Even if an is armed with a perfect duplicate of a system’s model, any attempt to introduce falsified data will be immediately detected and rejected by the system itself, requiring no human response.

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In a rare non-magnetic kagome material, a topological metal cools into a superconductor through a sequence of novel charge density waves. Researchers have discovered a complex landscape of electronic states that can co-exist on a kagome lattice, resembling those in high-temperature superconductor.

The Computational Cosmology group of the Department of Astronomy and Astrophysics (DAA) of Valencia University (UV) has published an article in The Astrophysical Journal Letters, one of the international journals with the greatest impact in Astrophysics, which shows, with complex theoretical-computational models, that cosmic voids are constantly replenished with external matter.

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The Computational Cosmology group of the Department of Astronomy and Astrophysics (DAA) of Valencia University (UV) has published an article in The Astrophysical Journal Letters, one of the international journals with the greatest impact in Astrophysics, which shows, with complex theoretical-computational models, that cosmic voids are constantly replenished with external matter.

“This totally unexpected result can have transcendental implications, not only for our understanding of the large-scale structure of the , but on the settings for the creation and evolution of galaxies,” explains Vicente Quilis, director at the DAA and head researcher for the project.

“Cosmic voids are the largest structures in the cosmos, and knowledge on their creation and evolution is essential to understand the of the universe,” says Susana Planelles, co-director of the research. Studying them as a physical occurrence has always been extremely complex precisely due to being large volumes with very low material content. From an observational point of view, analyzing the few existing items inside them is very hard, and the theoretical modeling of these occurrences is no less complex, which is why highly simplified descriptions of these structures are used.

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