Menu

Blog

Page 1969

Jul 13, 2023

Zachary Kallenborn — Existential Terrorism

Posted by in categories: existential risks, mathematics, policy, security, terrorism

“Some men just want to watch the world burn.” Zachary Kallenborn discusses acts of existential terrorism, such as the Tokyo subway sarin attack by Aum Shinrikyo in 1995, which killed or injured over 1,000 people.

Zachary kallenborn is a policy fellow in the center for security policy studies at george mason university, research affiliate in unconventional weapons and technology at START, and senior risk management consultant at the ABS group.

Continue reading “Zachary Kallenborn — Existential Terrorism” »

Jul 13, 2023

The First Chemical Approach To Reprogram Cells to a Younger State

Posted by in categories: biotech/medical, chemistry, life extension

In a groundbreaking study, researchers have unlocked a new frontier in the fight against aging and age-related diseases. The study, conducted by a team of scientists at Harvard Medical School, has published the first chemical approach to reprogram cells to a younger state. Previously, this was only achievable using a powerful gene therapy.

Researchers from Harvard Medical School, University of Maine and Massachusetts Institute of Technology (MIT) published a new research paper in Aging, titled, “Chemically induced reprogramming to reverse cellular aging.”

Jul 13, 2023

A New Electric Microcar Could Redefine Urban Mobility. By Folding?

Posted by in category: futurism

The new electric two-seater promises to reshape urban mobility in smart cities and will hopefully help lessen the effects of overcrowding on the roads.

Jul 13, 2023

Planet Ships

Posted by in category: space travel

Earth has often been compared to a spaceship, one that’s successfully orbited our star and the galaxy many times over billions of years. So what about moving our planet or even converting it or another world into a spaceship? Can we use entire planets to cross the intergalactic void to settle planets in distant galaxies or superclusters? And what sort of engine and drive could move a whole planet?

Visit our sponsor, Brilliant: https://brilliant.org/IsaacArthur/

Continue reading “Planet Ships” »

Jul 13, 2023

Light-activated molecular machines get cells ‘talking’

Posted by in categories: biotech/medical, chemistry, nanotechnology

One of the main ways cells “talk” to each other to coordinate essential biological activities such as muscle contraction, hormone release, neuronal firing, digestion and immune activation is through calcium signaling.

Rice University scientists have used light-activated molecular machines to trigger intercellular calcium wave signals, revealing a powerful new strategy for controlling cellular activity, according to a new study published in Nature Nanotechnology. This technology could lead to improved treatments for people with , digestive issues and more.

Continue reading “Light-activated molecular machines get cells ‘talking’” »

Jul 13, 2023

The Hard Problems of Consciousness and Psychology

Posted by in category: neuroscience

The problem of psychology is more important than the problem of consciousness.

Jul 13, 2023

Quantum plasmonics with dressing EM fields: Advancing the design of nanoscale integrated circuits

Posted by in categories: nanotechnology, quantum physics

Envision a realm where light can be meticulously controlled and manipulated at minuscule scales, unlocking unprecedented potentials for nanotechnology and quantum information technology. Recent breakthroughs in quantum research have propelled us closer to a reality that may be more achievable than previously realized.

In this article, we delve into the domain of surface plasmon polaritons (SPPs) and the vast possibilities they offer in revolutionizing the field of quantum optics.

Picture a serene lake on a sunny day. As you drop a small stone into the water, it sets in motion gentle ripples that traverse the surface. Now, imagine light as akin to those undulating ripples. When light encounters the interface of a metal and a dielectric material, it has the power to generate waves, much like the ripples on the lake. This phenomenon is even more intriguing because these light waves can interact with the metal’s microscopic constituents, such as electrons. Remarkably, the light waves and electrons synchronize their oscillations, giving rise to an SPP wave.

Jul 13, 2023

Jean-Pierre Sauvage, Nobel Laureate in Chemistry: ‘Work is being done on machines that will travel through the blood to kill cancer’

Posted by in categories: biotech/medical, chemistry, cyborgs, genetics, nanotechnology

Last year, the chemist – who is an emeritus professor at the University of Strasbourg – published a book titled The Elegance of Molecules. In the pages, he lets his imagination run wild. “Over time, most of the chemical reactions that govern nature could be controlled or imitated by a nanorobot: counter-offensives by the immune system, the production of antibodies, hormones on demand, the repairing of damaged cells and organs [or] the correction of anomalies in the genetic text,” Sauvage writes. “None of this will belong in the realm of science fiction in the long-term.”

Sitting in the hotel’s restaurant, however, the researcher’s realism contrasts with his futuristic fantasy. “Today, we can’t do much. Molecular machines are a somewhat new concept: we can make molecules that move as we choose [and] we can make a fairly complex molecule perform a rotary motion. Or we can make it behave like a muscle, stretching and contracting. The applications will arrive in the future, but we’re not there yet,” he stresses.

The French researcher has been developing these molecular muscles since 2002 alongside a Spanish chemist – María Consuelo Jiménez – from the Polytechnic University of Valencia. “The first thing was to show that we can make a molecule that contracts and stretches. Now, you can think of making materials – especially fibers – that can contract and stretch. Perhaps artificial muscles could be made to replace damaged muscles in people, but that will be in the future. At the moment, there are no real applications,” Sauvage clarifies.

Jul 13, 2023

WildDISCO: Visualizing whole bodies in unprecedented detail

Posted by in categories: biotech/medical, genetics, health

Researchers developed a new method called wildDISCO that uses standard antibodies to map the entire body of an animal using fluorescent markers. This revolutionary technique provides detailed 3D maps of structures, shedding new light on complex biological systems and diseases. WildDISCO has the potential to transform our understanding of intricate processes in health and disease and paves the way for exciting advancements in medical research. This technology was now introduced in Nature Biotechnology.

In the past, scientists relied on genetically modified animals or specialized labels to make specific structures and cells of interest visible in the entire body of an animal. But these approaches are expensive and time-consuming to create, especially when it comes to body-wide systems such as the nervous system.

A team of scientists from Helmholtz Munich, the LMU University Hospital and the Ludwig-Maximilians Universität München (LMU) now introduced a new method called wildDISCO, which makes use of standard antibodies to map whole bodies of mice. This ultimately enables the creation of detailed three-dimensional maps of normal and diseased structures in mammalian bodies in an easy-to-use and cost-efficient way.

Jul 13, 2023

Novel ‘toggle-switch’ could lead to more versatile quantum processors with clearer outputs

Posted by in categories: computing, employment, quantum physics

What good is a powerful computer if you can’t read its output? Or readily reprogram it to do different jobs? People who design quantum computers face these challenges, and a new device may make them easier to solve.

The device, introduced by a team of scientists at the National Institute of Standards and Technology (NIST), includes two superconducting quantum bits, or , which are a quantum computer’s analog to the logic bits in a classical computer’s processing chip. The heart of this new strategy relies on a “toggle switch” device that connects the qubits to a circuit called a “readout resonator” that can read the output of the qubits’ calculations.

This toggle switch can be flipped into different states to adjust the strength of the connections between the qubits and the readout resonator. When toggled off, all three elements are isolated from each other. When the switch is toggled on to connect the two qubits, they can interact and perform calculations. Once the calculations are complete, the toggle switch can connect either of the qubits and the readout resonator to retrieve the results.