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Oct 12, 2023

NASA’s recovered Bennu asteroid samples show evidence of carbon and water, scientists say

Posted by in categories: materials, space

Rocks and soil collected from the asteroid Bennu and brought back to Earth last month by NASA’s OSIRIS-REx probe are rich in carbon and contain water-bearing clay minerals that date back to the birth of the solar system, scientists said Wednesday. The discovery gives critical insight into the formation of our planet and supports theories about how water may have arrived on Earth in the distant past.

The clay minerals “have water locked inside their crystal structure,” said Dante Lauretta, a planetary scientist at the University of Arizona and the principal investigator of the asteroid sample return mission, while revealing initial photographs of the material.

Oct 12, 2023

Atlases lay out detailed maps of the brain for humans and other primates, cell by cell

Posted by in categories: biotech/medical, neuroscience

In a tour de force for neuroscience, teams of researchers have published a voluminous set of brain-cell atlases for humans and other primates.

The atlases are detailed in 21 research papers appearing in Science, Science Advances and Science Translational Medicine — and could point scientists toward new strategies for addressing mental conditions ranging from Alzheimer’s disease and schizophrenia to epilepsy and ADHD.

“We need to understand the specifics of the human brain if we hope to understand human diseases,” Ed Lein, a senior investigator at Seattle’s Allen Institute, said in comments provided via video.

Oct 12, 2023

NASA’s first asteroid-return sample is a goldmine of life-sustaining materials

Posted by in categories: chemistry, space

The powdery material that NASA officials unveiled on Wednesday looked like asphalt or charcoal, but was easily worth more than its weight in diamonds. The fragments were from a world all their own—pieces of the asteroid Bennu, collected and returned to Earth for analysis by the OSIRIS-REx mission. The samples hold chemical clues to the formation of our solar system and the origin of life-supporting water on our planet.

The clay and minerals from the 4.5 billion-year-old rock had been preserved in space’s deep freeze since the dawn of the solar system. Last month, after a seven-year-long space mission, they parachuted to a desert in Utah, where they were whisked away by helicopter.

Continue reading “NASA’s first asteroid-return sample is a goldmine of life-sustaining materials” »

Oct 12, 2023

Elevating neuromorphic computing using laser-controlled filaments in vanadium dioxide

Posted by in categories: materials, robotics/AI

In a new Science Advances study, scientists from the University of Science and Technology of China have developed a dynamic network structure using laser-controlled conducting filaments for neuromorphic computing.

Neuromorphic computing is an emerging field of research that draws inspiration from the to create efficient and intelligent computer systems. At its core, relies on , which are computational models inspired by the neurons and synapses in the brain. But when it comes to creating the hardware, it can be a bit challenging.

Mott materials have emerged as suitable candidates for neuromorphic computing due to their unique transition properties. Mott transition involves a rapid change in electrical conductivity, often accompanied by a transition between insulating and metallic states.

Oct 12, 2023

Nanoelectronic device performs real-time AI classification without relying on the cloud

Posted by in categories: robotics/AI, wearables

Forget the cloud. Northwestern University engineers have developed a new nanoelectronic device that can perform accurate machine-learning classification tasks in the most energy-efficient manner yet. Using 100-fold less energy than current technologies, the device can crunch large amounts of data and perform artificial intelligence (AI) tasks in real time without beaming data to the cloud for analysis.

With its tiny footprint, ultra-low power consumption and lack of lag time to receive analyses, the device is ideal for direct incorporation into wearable electronics (like smart watches and fitness trackers) for real-time and near-instant diagnostics.

To test the concept, engineers used the device to classify large amounts of information from publicly available electrocardiogram (ECG) datasets. Not only could the device efficiently and correctly identify an irregular heartbeat, it also was able to determine the arrhythmia subtype from among six different categories with near 95% accuracy.

Oct 12, 2023

You can now generate AI images directly in the Google Search bar

Posted by in category: robotics/AI

As long as you’ve opted-in to Google SGE, the search bar will double as a generative AI image prompt.

Oct 12, 2023

Internet companies report biggest-ever denial of service operation

Posted by in categories: cybercrime/malcode, internet

WASHINGTON, Oct 11 (Reuters) — Internet companies Google, Amazon and Cloudflare say they have weathered the internet’s largest-known denial of service attack and are sounding the alarm over a new technique they warn could easily cause widespread disruption.

Alphabet Inc-owned Google (GOOGL.O)said in a blog post published Tuesday that its cloud services had parried an avalanche of rogue traffic more than seven times the size of the previous record-breaking attack thwarted last year.

Internet protection company Cloudflare Inc (NET.N)said the attack was “three times larger than any previous attack we’ve observed.” Amazon.com Inc’s (AMZN.O) web services division also confirmed being hit by “a new type of distributed denial of service (DDoS) event.”

Oct 12, 2023

SpaceX Starlink lands Maersk in new deal for Ocean fleet

Posted by in categories: business, internet, satellites

SpaceX’s Starlink satellite internet service has landed a new client in Maersk, as the two companies came to terms on a deal that would provide the company’s Ocean fleet with internet access.

Maersk announced this morning that more than 330 own-operated container vessels will now have Starlink installed, enabling the fleet to access high-speed internet with speeds at over 200 Mbps.

The logistics company said the deal with SpaceX’s Starlink service “is a leap forward in terms of internet speed and latency, which will bring significant benefits in terms of both crew welfare and business impact.”

Oct 12, 2023

50 exaFLOPS supercomputer planned for 2025

Posted by in categories: robotics/AI, supercomputing

Chip designer Tachyum has accepted a major purchase order from a U.S. company to build a new supercomputing system for AI. This will be based on its 5 nanometre (nm) “Prodigy” Universal Processor chip, delivering more than 50 exaFLOPS of performance.

Tachyum, founded in 2016 and headquartered in Santa Clara, California, claims to have developed a disruptive, ultra-low-power processor architecture that could revolutionise data centre, AI, and high-performance computing (HPC) markets.

Oct 12, 2023

SIRT2 Works Against Cardiac Aging in Mice and Monkeys

Posted by in category: life extension

Working with non-human primates, scientists have discovered that the protein SIRT2, a member of the sirtuin family, might play an important role in slowing cardiac aging [1].

In this study published in Nature Aging, the researchers used long-tailed macaques to elucidate the molecular aspects of cardiac aging using multi-omics analysis. Unlike short-lived mice and rats, non-human primates like these have hearts that closely resemble those of humans and, due to their relatively long lifespan, suffer from spontaneous heart conditions as well.