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Jul 9, 2019

539 AD and 1014 AD… the tsunamis from hell

Posted by in category: space

An interesting article on how tsunamis caused by comets wiped out civilization in what is now the southeastern U.S. twice, in 539 and again in 1014. The bit about ammonia in the atmosphere also reminded me of the Norse prophecy about Thor wrestling with the Midgard Serpent, accompanied by poison in the air that kills many. I wonder how many strange things were witnessed by our ancestors for which they left us records that we are simply unable to understand.


Two massive comet or asteroid strikes in the past 1500 years altered Eastern North America’s history. The one in 539 AD devastated the South Atlantic Coast and permanently changed its geography. It left the South Atlantic Coastal Plain almost uninhabited. Hundreds of Uchee and Muskogean communities were wiped off the face of the earth. For obvious reasons, survivors headed north to the mountains.

tsunami-crashing

Continue reading “539 AD and 1014 AD… the tsunamis from hell” »

Jul 9, 2019

British submarine which stays underwater for 25 years makes us wonder

Posted by in category: existential risks

What will the crew do until 2039 if there IS a nuclear war?

Jul 9, 2019

Scientists successfully edit a long-locked part of plant DNA, improving crop security

Posted by in categories: biotech/medical, food, genetics, security

Think of DNA and chances are the double helix structure comes to mind, but that’s only one piece of the puzzle. Another major part is mitochondrial DNA, and in plants that’s even more important – and so complex that scientists haven’t yet been able to edit the genes in there. Now a team of Japanese researchers has managed to do just that, which could help improve the genetic diversity of crops.

Jul 9, 2019

Climate Facts

Posted by in category: climatology

Research on oceans.

Jul 9, 2019

Taking the Climate for Granted

Posted by in categories: climatology, health

It’s shocking that climate affects our health.

Jul 9, 2019

The Scientist Who Believes We Can Reverse Aging | Dr. Aubrey de Grey ►Rob Konrad: Conversations #010

Posted by in categories: biotech/medical, life extension

Dr Aubrey de Grey doesn’t just believe that aging, and the suffering that comes with it, can be slowed down — he believes it can be undone altogether.

What’s more, he thinks we are merely a few years away from making the scientific breakthroughs that will enable the medical field to put an end to death related to ageing — for good.

Continue reading “The Scientist Who Believes We Can Reverse Aging | Dr. Aubrey de Grey ►Rob Konrad: Conversations #010” »

Jul 9, 2019

ESA Video: What It Takes to Survive on Mars

Posted by in categories: futurism, space

NASA life support analyst Lucie Poulet explains how analog missions work and what they tell us about future crewed missions.

Jul 8, 2019

Simulation shows nuclear pasta 10 billion times harder to break than steel

Posted by in categories: computing, particle physics

A trio of researchers affiliated with several institutions in the U.S. and Canada has found evidence that suggests nuclear material beneath the surface of neutron stars may be the strongest material in the universe. In their paper published in the journal Physical Review Letters, M. E. Caplan, A. Schneider, and C. J. Horowitz describe their neutron star simulation and what it showed.

Prior research has shown that when reach a certain age, they explode and collapse into a mass of neutrons; hence the name star. And because they lose their neutrinos, become extremely densely packed. Prior research has also found evidence that suggests the surface of such stars is so dense that the material would be incredibly strong. In this new effort, the researchers report evidence suggesting that the material just below the surface is even stronger.

Astrophysicists have theorized that as a neutron star settles into its new configuration, densely packed neutrons are pushed and pulled in different ways, resulting in formation of various shapes below the . Many of the theorized shapes take on the names of pasta, because of the similarities. Some have been named gnocchi, for example, others spaghetti or lasagna. Caplan, Schneider and Horowitz wondered about the density of these formations—would they be denser and thus stronger even than material on the crust? To find out, they created some computer simulations.

Jul 8, 2019

Star Trek-style force-field armour being developed by military scientists

Posted by in category: military

A space-age “force field” capable of protecting armoured vehicles and tanks by repelling incoming fire is being developed by British military scientists.

Jul 8, 2019

Invention: Plasma-powered flying saucer

Posted by in categories: innovation, transportation

By Justin MullinsPass a current or magnetic field through a conducting fluid and it will generate a force. Numerous aerospace engineers have tried and failed to exploit this phenomenon, known as magnetohydrodynamics, as an exotic form of propulsion for aircraft. But perhaps attempts so far have all been too big.

A very small design could have a better chance of taking off, says Subrata Roy, an aerospace engineer at the University of Florida, Gainesville, US.

With a span of less than 15 centimetres, his aircraft qualifies as a micro air vehicle (MAV), but it has an unconventional design to say the least. It is a saucer shape covered with electrodes that ionise air to create a plasma. This plasma is then accelerated by an electric field to push air around and generate lift.