Lifeboat Foundation

An interesting article from Australia.

Australia is in an unusual situation, being at once potentially extremely self-reliant and in practice extremely vulnerable to disruptions in international trade.

Whereas disruptions could come from any one of many types of natural disasters or due to politics, I am glad to see that the Australians are seriously considering what it would require to maintain their civilization in the face of disruptions.

Continue reading “Think of coronavirus as a test run: Australian military leaders warn we must prepare for worse” »

Lithium-sulfur batteries have been hailed as the next big step in battery technology, promising significantly longer use for everything from cellphones to electric vehicles on a single charge, while being more environmentally sustainable to produce than current lithium-ion batteries. However, these batteries don’t last as long as their lithium-ion counterparts, degrading over time.

A group of researchers in the Cockrell School of Engineering at The University of Texas at Austin has found a way to stabilize one of the most challenging parts of lithium-sulfur batteries, bringing the technology closer to becoming commercially viable. The team’s findings, published today in Joule, show that creating an artificial layer containing tellurium, inside the battery in-situ, on top of lithium metal, can make it last four times longer.

“Sulfur is abundant and environmentally benign with no supply chain issues in the U.S.,” said Arumugam Manthiram, a professor of mechanical engineering and director of the Texas Materials Institute. “But there are engineering challenges. We’ve reduced a problem to extend the cycle life of these batteries.”

Albert Einstein famously postulated that “the only real valuable thing is intuition,” arguably one of the most important keys to understanding intention and communication.

But intuitiveness is hard to teach—especially to a machine. Looking to improve this, a team from MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL) came up with a method that dials us closer to more seamless human–robot collaboration. The system, called “Conduct-A-Bot,” uses human muscle signals from wearable sensors to pilot a robot’s movement.

Continue reading “Conduct-A-Bot system uses muscle signals to enable more natural human-robot communication” »

Today’s virtual reality systems can create immersive visual experiences, but seldom do they enable users to feel anything—particularly walls, appliances and furniture. A new device developed at Carnegie Mellon University, however, uses multiple strings attached to the hand and fingers to simulate the feel of obstacles and heavy objects.

By locking the strings when the user’s hand is near a virtual wall, for instance, the device simulates the sense of touching the wall. Similarly, the string mechanism enables people to feel the contours of a virtual sculpture, sense resistance when they push on a piece of furniture or even give a high five to a virtual character.

Continue reading “New device simulates feel of walls, solid objects in virtual reality” »

Ira Pastor, ideaXme life sciences ambassador, interviews Dr. Stanley Plotkin, Professor Emeritus at both Wistar Institute and the University of Pennsylvania and consultant to the vaccine industry.

Ira Pastor Comments:

Continue reading “Dr Stanley Plotkin: The Godfather of Vaccines” »

LIVE NOW: Ask us anything about asteroid 1998 OR2, interstellar comet Borisov and comet ATLAS. Asteroid 1998 OR2 will safely fly by Earth on April 29.

Join our Planetary Defense experts on Reddit to ask questions about comets and asteroids: https://www.reddit.com/r/askscience/comments/g9o4yp/askscien…_alma_and/

Scientists have — for the first time — shown how chemical triggers in the nervous system can amplify the pain experienced by mammals in response to certain stimuli.

The pain system probably evolved to alert them to life-threatening dangers. As they approach objects that are extremely hot or cold or are biting them, they experience intense pain — allowing them to get out of harm’s way.

But in certain diseases, that defence mechanism malfunctions and rather than providing a short, sharp shock — it produces long-term, chronic pain, seen with some conditions affecting humans such as neuropathies, arthritic pains or migraines.

Lucid in the sky.

With the curve finally flattening in the US, the ramping up of anti-viral and vaccine trials against SARS-CoV-2—the virus that causes Covid-19—and the launch of antibody tests to screen for previous infection, it seems like science is rapidly moving towards the end game. How exactly the Covid-19 pandemic will finally bugger off into history is still anyone’s guess, but virologists and public health experts generally agree that immunity is key—either through widespread safe and effective vaccination, or when enough of our population has recovered from infections and gained herd immunity.

Well. That’s the hand-waving, shruggie emoji, “eh who knows” short answer.

Like most processes in biology, immunity to SARS-CoV-2 is complex and mysterious, with results that could rapidly diverge into many possible futures. It’s partly why estimates of how long Covid-19 sticks around to wreak havoc can vary enormously, from months to years to…well, seasonal and forever, similar to the flu.