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Archive for the ‘biological’ category: Page 4

Dec 1, 2024

NASA Is Seeking Ideas for Rescuing an Astronaut from the Moon

Posted by in categories: biological, space travel

Space exploration is a dangerous business, especially when squishy living organisms, such as humans, are involved. NASA has always prided itself on how seriously it takes the safety of its astronauts, so as it gears up for the next big push in crewed space exploration, the Artemis program, it is looking for solutions to potentially catastrophic situations that might arise. One such catastrophe would be if one of the Artemis astronauts was incapacitated and couldn’t return to the lander. The only person who could potentially be able to save them would be their fellow astronaut, but carrying a fully suited human back to their base of operations would be a challenge for an astronaut similarly kitted out in their own bulky suit. So, NASA decided to address it as precisely that – a challenge – and ask for input from the general public, offering up to $20,000 for the best solution to the problem.

The challenge, “South Pole Safety: Designing the NASA Lunar Rescue System,” was announced on November 14th and accepts entries until January 23rd, 2025. It awards $45,000 to at least three winners, including $20,000 to the first-place winner. So, what does the challenge actually involve?

Continue reading “NASA Is Seeking Ideas for Rescuing an Astronaut from the Moon” »

Nov 29, 2024

Scientists uncover Earth’s oldest living creature from 700 million years ago

Posted by in categories: biological, evolution

New research identifies ctenophores as the first animals to diverge, reshaping our understanding of evolution and key biological traits.

Nov 29, 2024

Challenging Reality: A Scientist Maps the Landscape of Consciousness

Posted by in categories: biological, life extension, mapping, robotics/AI

Kuhn’s taxonomy of consciousness connects various theories to deep questions about human existence and AI, based on his extensive dialogue with over 200 experts.

“Out of meat, how do you get thought? That’s the grandest question,” said philosopher Patricia Churchland to Robert Lawrence Kuhn, the producer and host of the acclaimed PBS program Closer to Truth and member of FQxI’s scientific advisory council.

Kuhn has now published a comprehensive taxonomy of proposed solutions and theories regarding the hard problem of consciousness. His organizing framework aims to assess their impact on meaning, purpose, and value, as well as on AI consciousness, virtual immortality, survival beyond death, and free will. His work, titled ‘Landscape of Consciousness,’ appeared in the August 2024 issue of the journal Progress in Biophysics and Molecular Biology.

Nov 28, 2024

Scientists discover life on samples of asteroid Ryugu. Here’s what it means

Posted by in categories: biological, space

The examination of a sample brought from asteroid Ryugu in outer space turned exciting for scientists when they found it had life forms on it. However, soon the excitement died down when they found that the microbes on the sample had actually originated on Earth.

The sample was brought to Earth in 2020 after being gathered in 2019 during Japan’s Hayabusa2 mission.

Scientists treated the Ryugu samples with great care and kept them under strict contamination controls, limiting their chance of contamination.

Nov 28, 2024

Scientists discover shared genetic foundations between musical rhythm and human language

Posted by in categories: biological, genetics, life extension

In a study published Nov. 21 in the journal Nature Human Behaviour, researchers have uncovered significant genetic connections between human language abilities and musical rhythm skills, providing new insights into the biological underpinnings of these fundamental human traits.

The study brought together leading experts in the areas of musicality genetics and language genetics from Vanderbilt University Medical Center in close collaboration with researchers at the Max Planck Institute for Psycholinguistics in the Netherlands.

The study revealed overlapping between rhythm-related skills and language-related traits, including dyslexia. Multiple datasets were used from over 1 million individuals. By applying advanced multivariate methods, the researchers were able to identify common genetic factors and explore their biological and evolutionary significance.

Nov 26, 2024

SnoRNA Unleashed: Hidden Power That Shapes Life’s Biggest Processes

Posted by in category: biological

University of Chicago scientists have expanded our understanding of snoRNAs, discovering their extensive influence on cellular functions beyond guiding RNA modifications.

Their work introduces potential therapeutic applications for controlling protein secretion, highlighting snoRNAs’ broader biological significance.

SnoRNAs and Their Functions.

Nov 26, 2024

Cyanobacterial circadian clock uses an AM radio-like mechanism to control cellular processes

Posted by in categories: biological, media & arts, physics

Cyanobacteria, an ancient lineage of bacteria that perform photosynthesis, have been found to regulate their genes using the same physics principle used in AM radio transmission.

New research published in Current Biology has found that cyanobacteria use variations in the amplitude (strength) of a pulse to convey information in single cells. The finding sheds light on how biological rhythms work together to regulate cellular processes.

In AM (amplitude modulation) radio, a wave with constant strength and frequency—called a carrier wave—is generated from the oscillation of an electric current. The audio signal, which contains the information (such as music or speech) to transmit, is superimposed onto the carrier wave. This is done by varying the amplitude of the carrier wave in accordance with the frequency of the .

Nov 23, 2024

Scientists uncover cross-species neural mechanism for early detection of life motion in visual processing

Posted by in categories: biological, neuroscience

Visual systems of both humans and animals can detect life motion from the environment at the earliest stage of visual processing, research by scientists from the Chinese Academy of Sciences (CAS) uncovered.

Jointly led by scientists from the CAS Institute of Psychology and CAS Institute of Biophysics, the study also highlighted the critical role of the superior colliculus (SC) in the perception of biological motion (BM) signals, suggesting a cross-species mechanism for processing BM early in the visual stream.

Results of the study were published in Nature Communications on Nov. 7, titled “Detecting biological motion signals in human and monkey : a subcortical-cortical pathway for biological motion perception.”

Nov 23, 2024

Researchers discover distributed brain network underlying neural representations of biological motion attributes

Posted by in categories: biological, neuroscience

Biological motion refers to the kinesthetic information of living beings (i.e., humans and animals). The ability of biological motion perception is crucial for the organism’s survival and social interaction. Biological motion contains multidimensional attributes, including physical, biological and social attributes. How does our brain extract each attribute from multidimensional biological motion stimuli, and what is the relationship between the processing of different attributes?

A research team led by Prof. Jiang Yi from the Institute of Psychology of the Chinese Academy of Sciences used imaging (fMRI) to investigate the neural mechanisms underlying the processing of multidimensional biological motion attributes in the . They used point-light displays as test stimuli, in which only the movement trajectories of a person’s major joints are represented by a set of dots. They systematically manipulated three attributes of biological motion: walking direction, gender, and .

Using multiple regression representation similarity analysis (RSA), the researchers identified the brain networks involved in the processing of these three attributes. The that encode the walking direction attribute are mainly located in the dorsal cortical areas, those that represent the gender attribute are located in the frontal and , and the neural representations of the emotional state attribute widely involve the dorsal and ventral cortical areas.

Nov 23, 2024

Face detection in untrained deep neural networks

Posted by in categories: biological, mapping, robotics/AI

Researchers have explained how the regularly structured topographic maps in the visual cortex of the brain could arise spontaneously to efficiently process visual information. This research provides a new framework for understanding functional architectures in the visual cortex during early developmental stages.

A KAIST research team led by Professor Se-Bum Paik from the Department of Bio and Brain Engineering has demonstrated that the orthogonal organization of retinal mosaics in the periphery is mirrored onto the and initiates the clustered topography of higher visual areas in the brain.

This new finding provides advanced insights into the mechanisms underlying a biological strategy of brain circuitry for the efficient tiling of sensory modules. The study was published in Cell Reports on January 5.

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