An ancient rock — or rather, the living microbes inside of it — could offer an unprecedented glimpse into early life on Earth.
Category: biological – Page 10
From 2022, but an interesting look at Lobsters, and list of animals semi-immortal, tortoises, greenland sharks, jellyfish, etc…
Could the key to lobsters’ longevity slow down our biological clocks?
No one likes the thought of getting old, but it seems to be an inevitable part of life. Most species grow, develop and repair damage to their bodies until a certain point in adulthood. After this, the body becomes less capable of repairing itself and slowly starts to accumulate damage.
But this doesn’t seem to apply to lobsters. They keep growing throughout their extraordinarily long lives – the oldest known lobsters captured have weighed over nine kilograms, with ages estimated between 120 and 140 years.
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?
The work product is a design document for a system capable of moving fully suited astronauts at least two kilometers up a 20-degree slope without being attached to a rover. Oh, and it has to be able to operate in the harsh conditions of the lunar south pole.
New research identifies ctenophores as the first animals to diverge, reshaping our understanding of evolution and key biological traits.
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.
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.
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 genetic underpinnings 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.
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.
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 audio signal.
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 superior colliculus: a subcortical-cortical pathway for biological motion perception.”