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Archive for the ‘evolution’ category: Page 42

Jul 28, 2023

Twitter Has Undeniably Gotten Better Under Elon Musk

Posted by in categories: Elon Musk, evolution

Opinion Piece. What’s your opinion?

The social media platform formerly known as Twitter has gone through another remarkable evolution thanks to owner Elon Musk. The platform is now called “X” and is even sporting a brand spanking new logo. The blue bird has taken its last flight and the site seems poised to bring its users into the next venture in the Muskverse.

But not everyone has been happy with the changes Musk has made since taking over the company. Rep. Alexandria Ocasio-Cortez (D-NY) recently went after Musk for the supposed harassment she receives on the platform. It seems that since the day he bought the social media company, he has been making leftists’ heads explode, and AOC is far from an exception in claiming she “never experienced more harassment on this platform” than she does now. She also claimed people “now pay to give their harassment more visibility.”

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Jul 27, 2023

How the Microbiome Influences Immunity in Drosophila

Posted by in category: evolution

Antimicrobial peptides (AMPs)—small peptides that protect against microbial infection—are crucial immune effectors in both plants and animals. They not only fight against potential infections, they also influence the composition of the host’s microbiome. Little is known about the driving forces behind AMPs’ rapid evolution. Now, a study uncovers the selective pressures driving the evolution of AMPs and how they control bacteria in the host’s microbiome.

The work is published in Science in the paper, “Ecology-relevant bacteria drive the evolution of host antimicrobial peptides in Drosophila.”

The researchers focused on Diptericin (Dpt), a small antimicrobial peptide that mainly defends Drosophila against Gram-negative bacteria. The team examined how Diptericins function in Drosophila and evolve in response to their microbial environment.

Jul 25, 2023

What Happens When Scientists Put a Human Intelligence Gene Into a Monkey?

Posted by in categories: biotech/medical, evolution, genetics, neuroscience

Scientists adding a human intelligence gene into monkeys — it’s the kind of thing you’d see in a movie like Rise of the Planet of the Apes. But Chinese researchers have done just that, improving the short-term memories of the monkeys in a study published in March 2019 in the Chinese journal National Science Review. While some experts downplayed the effects as minor, concerns linger over where the research may lead.

The goal of the work, led by geneticist Bing Su of Kunming Institute of Zoology, was to investigate how a gene linked to brain size, MCPH1, might contribute to the evolution of the organ in humans. All primates have some variation of this gene. However, compared with other primates, our brains are larger, more advanced and slower to develop; the researchers wondered whether differences that evolved in the human version of MCPH1 might explain our more complex brains.

Article from 2019

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Jul 24, 2023

Primal Eye

Posted by in category: evolution

Steve Nichols’s research from 1979 concerning the early evolution of mind, E2 to E1. Latest research see https://posthumanuniversity.com

Jul 24, 2023

An Enormous Cosmological Simulation Wraps Up, Recreating Even More of the Universe

Posted by in categories: cosmology, evolution, particle physics

There’s an old joke among astronomy students about a question on the final exam for a cosmology class. It goes like this: “Describe the Universe and give three examples.” Well, a team of researchers in Germany, the U.S., and the UK took a giant leap toward giving at least one accurate example of the Universe.

To do it, they used a set of simulations called “MillenniumTNG”. It traces the buildup of galaxies and cosmic structure across time. It also provides new insight into the standard cosmological model of the Universe. It’s the latest in cosmological simulations, joining such ambitious efforts as the AbacusSummit project of a couple of years ago.

This simulation project takes into account as many aspects of cosmic evolution as possible. It uses simulations of regular (baryonic) matter (which is what we see in the Universe). It also includes dark matter, neutrinos, and the still-mysterious dark energy on the formation mechanisms of the Universe. That’s a tall order.

Jul 23, 2023

NASA’s Newest Storm-Watching Satellites Captured the Evolution of Hurricane’s Structure

Posted by in categories: climatology, evolution, government, physics, satellites

Observations made by NASA

Established in 1958, the National Aeronautics and Space Administration (NASA) is an independent agency of the United States Federal Government that succeeded the National Advisory Committee for Aeronautics (NACA). It is responsible for the civilian space program, as well as aeronautics and aerospace research. Its vision is “To discover and expand knowledge for the benefit of humanity.” Its core values are “safety, integrity, teamwork, excellence, and inclusion.” NASA conducts research, develops technology and launches missions to explore and study Earth, the solar system, and the universe beyond. It also works to advance the state of knowledge in a wide range of scientific fields, including Earth and space science, planetary science, astrophysics, and heliophysics, and it collaborates with private companies and international partners to achieve its goals.

Jul 23, 2023

Is the end of the ‘particle era’ of physics upon us?

Posted by in categories: cosmology, evolution, particle physics

The discovery of the Higgs Boson in 2012 represented a major turning point for particle physics marking the completion of what is known as the standard model of particle physics. Yet, the standard model can’t answer every question in physics, thus, since this discovery at the Large Hadron Collider (LHC) physicists have searched for physics beyond the standard model and to determine what shape future physics will take.

A paper in The European Physical Journal H by Robert Harlander and Jean-Philippe Martinez of the Institute for Theoretical Particle Physics and Cosmology, RWTH Aachen University, Germany, and Gregor Schiemann from the Faculty of Humanities and Cultural Studies, Bergische Universität Wuppertal, Germany, considers the idea that particle physics may be on the verge of a new era of discovery and understanding in particle physics. The paper also considers the implications of the many possible scenarios for the future of high-energy physics.

“Over the last century, the concept of the particle has emerged as fundamental in the field of physics,” Martinez said. “It has undergone a significant evolution across time, which has opened up new ways for particle observation, and thus for the discovery of new particles. Currently, observing a particle requires its on-shell production.”

Jul 22, 2023

James Webb Space Telescope makes 1st detection of diamond-like carbon dust in the universe’s earliest stars

Posted by in categories: alien life, chemistry, evolution

The James Webb Space Telescope has detected the earliest-known carbon dust in a galaxy ever.

Using the powerful space telescope, a team of astronomers spotted signs of the element that forms the backbone of all life in ten different galaxies that existed as early as 1 billion years after the Big Bang.

The detection of carbon dust so soon after the Big Bang could shake up theories surrounding the chemical evolution of the universe. This is because the processes that create and disperse heavier elements like this should take longer to build up in galaxies than the age of these young galaxies at the time the James Webb Space Telescope (JWST) sees them.

Jul 21, 2023

Molecular features driving cellular complexity of human brain evolution

Posted by in categories: evolution, neuroscience

A single-cell genomics analysis of humans, chimpanzees and rhesus macaques reveals the molecular features that drive cellular and regulatory complexity of human brain evolution.

Jul 21, 2023

Scientists use chemical mapping to study the spiraling arms of the Milky Way

Posted by in categories: chemistry, evolution, mapping, space

A researcher has used the technique of chemical mapping to study the spiral arms of our home galaxy: the Milky Way. According to Keith Hawkins, assistant professor at The University of Texas at Austin, chemical cartography might help us better grasp the structure and evolution of our galaxy.

“Much like the early explorers, who created better and better maps of our world, we are now creating better and better maps of the Milky Way,” mentioned Hawkins in an official release.


NASA/JPL-Caltech.

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