The Facebook CEO talks to Casey Newton about why he is putting his company’s resources toward the “metaverse,” a future that imagines an internet that combines physical, augmented, and virtual realities.
An “unusually large” meteor illuminated the night sky over southern Scandinavia early Sunday morning before at least some of it came rumbling down near Oslo, the capital of Norway.
The meteor “lit up the sky for a brief time as if broad daylight,” just after 1 a.m., Steinar Midtskogen, a spokesperson for the Norwegian Meteor Network, told CNN.
“A minute later or more a loud rumbling sound could be heard over a large area, perhaps up to 100 km (about 62 miles) away from where the meteor was seen straight overhead,” Midtskogen said in an email.
In 1970, scientists detected amino acids in a meteorite. Fifty years later, a variety of chemical ingredients for life have been found in other space rocks.
Circa 2005 o,.o.
Stable and reproducible spontaneous self-ignition and self-supporting combustion have been achieved at room temperature by exposing nanometer-sized catalytic particles to methanol/air or ethanol/air gas mixtures. Without any external ignition, structurally supported platinum nanoparticles instantaneously react with the gas mixtures. The reaction releases heat and produces CO2 and water. Such reactions starting at ambient temperature have reached both high (]600 °C) and low (a few tenths of a degree above room temperature) reaction temperatures. The reaction is controlled by varying the fuel/air mixture. Catalytic activity could be dramatically changed by reducing particle size and changing particle morphology.
I believe since the weird localization of the virus in Japan that this sorta self evolving virus needs to have a counter like a self evolving vaccine but at the very least new variants can be made super fast with new technology in vaccine making.
Washington — Dr. Scott Gottlieb, former Food and Drug Administration commissioner, said Sunday he thinks the U.S. is further into the COVID-19 epidemic driven by the Delta variant than Centers for Disease Control and Prevention (CDC) models are picking up. He said that could mean “hopefully we’re going to turn a corner” in the next two to three weeks.
“We’re not doing a lot of testing. More of the testing that we are doing is antigen tests that are being done at home and not getting reported,” Gottlieb said. “So, I think we’re much further into this epidemic than we’re picking up and hopefully further through this epidemic.”
The Pacific basin is thought to contain more than 30 billion tons of so-called polymetallic nodules, rocks that are rich with cobalt, copper, manganese, nickel, rare-earth elements and titanium. Scientists and entrepreneurs have been researching methods of extracting them since the 1960s. In 1994, the International Seabed Authority was established to regulate mining efforts and protect the seabed environment. Any of the group’s 167 member-states can stake claims to mining concessions on the ocean floor and sponsor private companies to explore them. But the ISA has not yet completed, much less approved, any regulations. So far, it’s only handed out permits for exploration.
Despite the potential riches, more time is needed to study the potential impact on the least resilient ecosystem on the planet.
Getting blood to a wounded soldier could be the difference between life and death. A drone swarm is one way to make that happen in battle.
Blood is usually a finite quality on a battlefield. Battles can cause a number of injuries, from the minor to the critical. If a soldier can get the wound closed in time, they can staunch the loss, but keeping the patient alive may require an influx of new blood. As medics work to aid their comrades, they could receive help from an unusual source: delivery drones, bringing literal fresh blood to the battlefield.
A drone swarm capable of delivering blood was part of Autonomous Advance Force 4.0, an exercise by the United Kingdom’s armed forces in which Royal Marines Commandos trained with modern technology for future war. The July exercise took place in Cumbria and Dorset, with a release announced July 17.
Continue reading “Drones could help save soldiers’ lives by delivering blood on demand” »
An AI tech was taught to detect sunken ships using images taken from the air and ships on the surface. The project was focused on the coasts of mainland US and Puerto Rico.
The AI is now ready for more extensive tests in unknown regions to look for shipwrecks still missing.
The photovoltaic effect of ferroelectric crystals can be increased by a factor of 1000 if three different materials are arranged periodically in a lattice. This has been revealed in a study by researchers at Martin Luther University Halle-Wittenberg (MLU). They achieved this by creating crystalline layers of barium titanate, strontium titanate and calcium titanate which they alternately placed on top of one another. Their findings, which could significantly increase the efficiency of solar cells, were published in the journal Science Advances.
Most solar cells are currently silicon based; however, their efficiency is limited. This has prompted researchers to examine new materials, such as ferroelectrics like barium titanate, a mixed oxide made of barium and titanium. “Ferroelectric means that the material has spatially separated positive and negative charges,” explains physicist Dr Akash Bhatnagar from MLU’s Centre for Innovation Competence SiLi-nano. “The charge separation leads to an asymmetric structure that enables electricity to be generated from light.” Unlike silicon, ferroelectric crystals do not require a so-called pn junction to create the photovoltaic effect, in other words, no positively and negatively doped layers. This makes it much easier to produce the solar panels.
However, pure barium titanate does not absorb much sunlight and consequently generates a comparatively low photocurrent. The latest research has shown that combining extremely thin layers of different materials significantly increases the solar energy yield. “The important thing here is that a ferroelectric material is alternated with a paraelectric material. Although the latter does not have separated charges, it can become ferroelectric under certain conditions, for example at low temperatures or when its chemical structure is slightly modified,” explains Bhatnagar.
Shortly thereafter, China National Space Agency (CNSA) shared the first images taken by the Tianwen-1 lander.
By May 22, the Zhurong rover descended from its lander and drove on the Martian surface for the first time. Since then, the rover has spent 63 Earth days conducting science operations on the surface of Mars and has traveled over 450 meters (1475 feet).
On Friday, July 9, and again on July 15, the CNSA released new images of the Red Planet that were taken by the rover as it made its way across the surface.
