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Mar 7, 2018

San Franciscans keep attacking driverless cars

Posted by in categories: robotics/AI, transportation

Kind of funny, but probably a sign of what will come in the mid 2020’s.

Technology and automotive companies touting self-driving cars as the future of transportation may have some work to convince San Franciscans, who keep attacking the vehicles.

A third of traffic collisions involving autonomous vehicles in 2018 so far featured humans physically confronting the cars, according to data released by California.

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Mar 7, 2018

Weapons of the future: Here’s the new war tech Lockheed Martin is pitching to the Pentagon

Posted by in categories: engineering, military, robotics/AI

Yet several defense contractors are developing these engineering concepts for the U.S. military, hoping to get a piece of what is surely going to be a lucrative and lengthy contract.

Speaking to reporters at Lockheed Martin’s media day on Monday, CEO Marillyn Hewson touted investments in hypersonics, laser weapons, electronic warfare and artificial intelligence.

“Lockheed Martin has taken a leadership role in these four technology areas, and many others, to build an enterprise that can successfully support our customers’ rapidly evolving technology needs well into the future,” Hewson said.

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Mar 6, 2018

Bill Gates Says We Shouldn’t Panic About Artificial Intelligence

Posted by in categories: Elon Musk, robotics/AI

In a recent interview, Microsoft co-founder and billionaire philanthropist Bill Gates told The Wall Street Journal he disagrees with Elon Musk’s assertions that artificial intelligence is a significant threat to humanity.

Artificial intelligence (AI) is one of today’s hottest topics. In fact, it’s so hot that many of the tech industry’s heavyweights — Apple, Google, Amazon, Microsoft, etc. — have been investing huge sums of money to improve their machine-learning technologies.

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Mar 6, 2018

Bioquark Inc. — Creative Futurism — Ira Pastor

Posted by in categories: aging, bioengineering, biotech/medical, cosmology, cryonics, DNA, futurism, health, military, science

Mar 6, 2018

Terrawatch: Montserrat’s volcano remains a risk

Posted by in category: futurism

Instruments show that Montserrat’s volcano is still inflating underground, despite no sign of it on the surface.

Read more

Mar 6, 2018

What happens to your Bitcoin if you die or forget passwords?

Posted by in categories: bitcoin, cryptocurrencies, economics, finance, internet, law

Legacy Method of Inheriting Assets

Many Bitcoin owners choose to use a custodial account, in which the private keys to a wallet are generated and controlled by their exchange—or even a bank or stock broker. In this case, funds are passed to heirs in the usual way. It works like this…

An executor, probate attorney, or someone with a legal claim contacts the organization that controls the assets. They present a death certificate, medical proxy or power-of-attorney. Just as with your bank account or stocks and bonds, you have the option of listing next of kin and the proportion of your assets that should be distributed to each. These custodial services routinely ask you to list individuals younger than you and alternate heirs, along with their street addresses, in the event that someone you list has died before you.

Of course, Bitcoin purists and Libertarians point out that the legacy method contradicts the whole point of owning a cryptocurrency. Fair enough.

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Mar 6, 2018

Iconic Stellar Ring Much Stranger Than Previously Thought

Posted by in category: space

You’re looking at an image of an enormous ring of debris, 237 light years away from Earth, orbiting a long-studied, young star called HR 4796A. While the bright white ring of debris may be the most visually striking part of the image, astronomers are more excited about what’s around it: the much larger, less-concentrated area of dust around it.

Scientists have long known about the dust and ring surrounding the star. The ring alone is 77 astronomical units in radius, almost twice Pluto’s average distance from our our sun. But a team recently took another look with the Hubble Space Telescope, and learned that the structure was in fact much larger and more complex than they previously thought.

“The resulting images unambiguously reveal the debris ring embedded within a much larger, morphologically complex, and biaxially asymmetric exo-ring scattering structure,” the authors wrote in the paper published recently in The Astronomical Journal. In other words, it’s big and weird-shaped. Check it out:

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Mar 6, 2018

New thruster tech converts air molecules into fuel for orbiting satellites

Posted by in categories: particle physics, satellites

The European Space Agency created the world’s first thruster which allows satellites to remain in orbit for years longer than they currently do. The secret? The thruster runs on particles of air in the atmosphere.

Others have tried to improve the staying power of satellites before, but most are still limited by the amount of fuel they can carry. The new ion thruster “breathes” the rare air particles in the top of the atmosphere, allowing the satellites to remain without immediate need for refueling.

The thruster was developed by an ESA team and built by SITAEL, a private company in Italy. The air particles bounce away from satellites normally, but the thruster collects them and gives them an electric charge, after which they are ejected to provide thrust that counteracts atmospheric drag.

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Mar 6, 2018

Physicists Find a Way to See the ‘Grin’ of Quantum Gravity

Posted by in categories: cosmology, particle physics, quantum physics

In 1935, when both quantum mechanics and Albert Einstein’s general theory of relativity were young, a little-known Soviet physicist named Matvei Bronstein, just 28 himself, made the first detailed study of the problem of reconciling the two in a quantum theory of gravity. This “possible theory of the world as a whole,” as Bronstein called it, would supplant Einstein’s classical description of gravity, which casts it as curves in the space-time continuum, and rewrite it in the same quantum language as the rest of physics.

Bronstein figured out how to describe gravity in terms of quantized particles, now called gravitons, but only when the force of gravity is weak — that is (in general relativity), when the space-time fabric is so weakly curved that it can be approximated as flat. When gravity is strong, “the situation is quite different,” he wrote. “Without a deep revision of classical notions, it seems hardly possible to extend the quantum theory of gravity also to this domain.”

His words were prophetic. Eighty-three years later, physicists are still trying to understand how space-time curvature emerges on macroscopic scales from a more fundamental, presumably quantum picture of gravity; it’s arguably the deepest question in physics. Perhaps, given the chance, the whip-smart Bronstein might have helped to speed things along. Aside from quantum gravity, he contributed to astrophysics and cosmology, semiconductor theory, and quantum electrodynamics, and he also wrote several science books for children, before being caught up in Stalin’s Great Purge and executed in 1938, at the age of 31.

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Mar 6, 2018

Have there been successful Transaction Malleability attacks?

Posted by in categories: bitcoin, cryptocurrencies, economics, finance, internet

First, let’s get some basics out of the way…

What is Transaction Malleability?

Here are 2 explanations of transaction malleability: [Coindesk] [TechTalk]

In a nutshell, Transaction Malleability is a weakness in the original Bitcoin implementation that enables a bad actor to change the unique ID of a bitcoin transaction before it is confirmed on the Blockchain. Such a change makes it possible for someone to pretend that a transaction didn’t happen, if all necessary conditions are in place.

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