A new paper suggests the early solar system was shielded from the destructive force of a dying star.
Our sun may have been shielded from a massive supernova explosion by a shield of molecular gas during the early evolution of our solar system, a press statement reveals.
The researchers, led by National Astronomical Observatory of Japan astrophysicist Doris Arzoumanian, believe their findings could shed light on the early formation of the solar system at the same time as helping us better understand how distant star systems evolve over time.
Evolutionary biologist Jay T. Lennon’s research team has been studying a synthetically constructed minimal cell that has been stripped of all but its essential genes. The team found that the streamlined cell can evolve just as fast as a normal cell—demonstrating the capacity for organisms to adapt, even with an unnatural genome that would seemingly provide little flexibility.
Details about the study can be found in a paper featured in Nature. Roy Z. Moger-Reischer, a Ph.D. student in the Lennon lab at the time of the study, is first author on the paper.
“Listen, if there’s one thing the history of evolution has taught us is that life will not be contained. Life breaks free. It expands to new territories, and it crashes through barriers painfully, maybe even dangerously, but… ife finds a way,” said Ian Malcolm, Jeff Goldblum’s character in Jurassic Park, the 1993 science fiction film about a park with living dinosaurs.
In a significant leap for the field of quantum computing, Google has reportedly engineered a quantum computer that can execute calculations in mere moments that would take the world’s most advanced supercomputers nearly half a century to process.
The news, reported by the Daily Telegraph, could signify a landmark moment in the evolution of this emerging technology.
Quantum computing, a science that takes advantage of the oddities of quantum physics, remains a fast-moving and somewhat contentious field.
Humans split away from our closest animal relatives, chimpanzees, and formed our own branch on the evolutionary tree about seven million years ago. In the time since—brief, from an evolutionary perspective—our ancestors evolved the traits that make us human, including a much bigger brain than chimpanzees and bodies that are better suited to walking on two feet. These physical differences are underpinned by subtle changes at the level of our DNA. However, it can be hard to tell which of the many small genetic differences between us and chimps have been significant to our evolution.
New research from Whitehead Institute Member Jonathan Weissman; University of California, San Francisco Assistant Professor Alex Pollen; Weissman lab postdoc Richard She; Pollen lab graduate student Tyler Fair; and colleagues uses cutting edge tools developed in the Weissman lab to narrow in on the key differences in how humans and chimps rely on certain genes. Their findings, published in the journal Cell on June 20, may provide unique clues into how humans and chimps have evolved, including how humans became able to grow comparatively large brains.
The concept of a computational consciousness and the potential impact it may have on humanity is a topic of ongoing debate and speculation. While Artificial Intelligence (AI) has made significant advancements in recent years, we have not yet achieved a true computational consciousness that can replicate the complexities of the human mind.
It is true that AI technologies are becoming more sophisticated and capable of performing tasks that were previously exclusive to human intelligence. However, there are fundamental differences between Artificial Intelligence and human consciousness. Human consciousness is not solely based on computation; it encompasses emotions, subjective experiences, self-awareness, and other aspects that are not yet fully understood or replicated in machines.
The arrival of advanced AI systems could certainly have transformative effects on society and our understanding of humanity. It may reshape various aspects of our lives, from how we work and communicate to how we approach healthcare and scientific discoveries. AI can enhance our capabilities and provide valuable tools for solving complex problems.
However, it is important to consider the ethical implications and potential risks associated with the development of AI. Ensuring that AI systems are developed and deployed responsibly, with a focus on fairness, transparency, and accountability, is crucial.
GAINESVILLE, Florida (KXAN) — Did you ever wonder where butterflies came from? A recently published research paper has revealed a surprising origin: North and Central America.
The paper, published in Nature Ecology & Evolution, examined DNA from nearly 2,300 species of butterfly. The team used the data to develop a family tree and track down where the species came from.
Turns out, butterflies evolved from nocturnal moths around 101.4 million years ago.
Sources & further reading: https://sites.google.com/view/sources-biorisk. This video was made possible through a grant by Open Philanthropy. Check out the biorisk career guide from 80,000 hours: https://80000hours.org/kurz-bio. Find the Map of Evolution and other fascinating infographic posters on the kurzgesagt shop here: kgs.link/shop-179
A breathtaking scientific revolution is taking place – biotechnology has been progressing at stunning speed, giving us the tools to eventually gain control over biology. On the one hand solving the deadliest diseases while also creating viruses more dangerous than nuclear bombs, able to devastate humanity.
Wolf-Rayet (WR) stars are not only hot, bright, and massive. They are also in an advanced stage of evolution, losing mass at an incredible rate.
While surveying the neighboring Andromeda galaxy, astronomers discovered a new batch of Wolf-Rayet stars.
Some huge stars in galaxies may develop into Wolf-Rayet stars before going supernova. That’s why, Wolf-Rayet stars are intriguing candidates for studying the universe’s evolution.
Ancient genomes can inform our understanding of the history of human adaptation through the direct tracking of changes in genetic variant frequency across different geographical locations and time periods. The authors review recent ancient DNA analyses of human, archaic hominin, pathogen, and domesticated animal and plant genomes, as well as the insights gained regarding past human evolution and behaviour.
The human body reveals compelling evidence of evolution. By examining its intricacies, we uncover remnants of our animal ancestors. One such example is the palmaris longus, a vestigial muscle in the forearm. Although it no longer affects grip strength, it can be removed for reconstructive surgeries. Our outer ear muscles also bear witness to our evolutionary past. While their movement is limited to humans, they once aided early nocturnal mammals in sound localization. Today, electrodes can detect slight muscle activity in response to sudden sounds.
Goosebumps offer another intriguing clue. When we’re cold, tiny muscles connected to body hairs contract, causing the hair to stand upright, and creating bumps on the skin. This response, useful for furry mammals’ insulation, can also be triggered by intense emotions or surprising musical moments in humans. Lastly, the tailbone, or coccyx, composed of fused vertebrae, represents the vestiges of our ancestors’ tails. Although all humans develop a tail during embryonic stages, it regresses and disappears, except in rare cases of a vestigial tail present at birth. These remnants within our bodies provide tangible proof of evolution. Delving into these fascinating traces deepens our understanding of our evolutionary journey and our place in the natural world.
