БЛОГ

Archive for the ‘evolution’ category

Oct 10, 2021

Living brain donors are helping us better understand our own neurons — including those potentially linked to Alzheimer’s disease

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

Live human brain tissue — generously donated by brain surgery patients with epilepsy or tumors — is yielding incredible #neuroscience insights. A study on cells… See More.


As part of an international effort to map cell types in the brain, scientists identified increased diversity of neurons in regions of the human brain that expanded during our evolution.

Continue reading “Living brain donors are helping us better understand our own neurons — including those potentially linked to Alzheimer’s disease” »

Oct 9, 2021

Launching Lucy, NASA’s First Mission to the Trojan Asteroids

Posted by in categories: evolution, space

On Oct. 16 2021, our Lucy spacecraft will begin its journey to visit a record-breaking number of asteroids. The 12-year mission starts from NASA’s Kennedy Space Center where it’ll launch aboard a United Launch Alliance Atlas V 401 rocket. From there, Lucy will be the first spacecraft to visit a record number of destinations in independent orbits around the sun – one main belt asteroid and seven of Jupiter’s Trojan Asteroids. Like the mission’s namesake – the fossilized human ancestor, “Lucy,” whose skeleton provided unique insight into humanity’s evolution – Lucy will revolutionize our knowledge of planetary origins and the formation of the solar system.

Lucy’s first launch attempt in its 21-day launch window is scheduled for 5:34 a.m. EDT on Oct. 16. Launch coverage starts at 5 a.m. EDT on NASA TV, the NASA app, and @NASA social media. Be a part of Lucy’s historic launch day by using the hashtag #LucyMission!

Continue reading “Launching Lucy, NASA’s First Mission to the Trojan Asteroids” »

Oct 8, 2021

Scientists Finally Know Why Wisdom Teeth Only Emerge When We’re Basically Adults

Posted by in category: evolution

We humans like to take our time when it comes to growing up. Among the great apes, only chimpanzees come close to stretching out the years between key developmental milestones.

But even chimps are ready to get crunching with a full set of chompers by the time they’re sexually mature. Homo sapiens don’t grow their last few teeth until they’re nearly out of the teenage years.

This mystery of the molars is a tricky one to solve, in spite of their emergence playing such a critical role in tracking shifts in our evolution. But researchers from the University of Arizona in the US now think they might have cracked it.

Continue reading “Scientists Finally Know Why Wisdom Teeth Only Emerge When We’re Basically Adults” »

Oct 8, 2021

Scientists pinpoint evolutionary genes that allow lizards to give birth like mammals

Posted by in categories: biotech/medical, evolution

Dr. Hans Recknagel, who led the field and genome research during his Ph.D. and postdoctoral research, said: This was fascinating research, not least because in this species of lizard egg-laying populations still occur and interbreed with live-bearing ones.


Scientists studying the evolution of birth in lizards, from egg-laying to live births, have pinpointed the evolutionary genes from which the species is evolving to ‘build’ a new mode of reproduction.

The study—led by the University of Glasgow and published in Nature Ecology and Evolution —found that a significantly similar amount of the same genes involved in the pregnancy of lizards were shared with other mammals and live-bearing vertebrates.

Continue reading “Scientists pinpoint evolutionary genes that allow lizards to give birth like mammals” »

Oct 6, 2021

The Biggest Simulation of the Universe Yet Stretches Back to the Big Bang

Posted by in categories: cosmology, evolution, particle physics

Remember the philosophical argument our universe is a simulation? Well, a team of astrophysicists say they’ve created the biggest simulated universe yet. But you won’t find any virtual beings in it—or even planets or stars.

The simulation is 9.6 billion light-years to a side, so its smallest structures are still enormous (the size of small galaxies). The model’s 2.1 trillion particles simulate the dark matter glue holding the universe together.

Continue reading “The Biggest Simulation of the Universe Yet Stretches Back to the Big Bang” »

Oct 6, 2021

Gene linked to evolution of limb development identified

Posted by in categories: biotech/medical, evolution

University of Kentucky College of Medicine researchers were part of a new study that gives insight into how limb development evolved in vertebrates.

The findings, published in Current Biology Oct. 4 identify a gene that plays a central role in the evolution of limb development in vertebrates. By manipulating this gene in mice, researchers were able to activate an ancestral form of limb development seen in early tetrapods (four-legged vertebrates).

In the limbs of all tetrapods, the bones on the hands and feet on the outside edge form first, known as postaxial development. The study focuses on , which are the only exception to this rule: their limb bones develop preaxially, or from the inside edge; the thumb before pinky.

Oct 6, 2021

NASA’s Lucy Mission To Explore the Jupiter Trojan Asteroids — “It’s Almost Like We’re Traveling Back in Time”

Posted by in categories: evolution, space

Called “Trojans” after characters from Greek mythology, most of Lucy’s target asteroids are left over from the formation of the solar system. These Trojans circle the Sun in two swarms: one that precedes and one that follows Jupiter in its orbit of the Sun. Lucy will be the first spacecraft to visit the Trojans, and the first to examine so many independent solar system targets, each in its own orbit of the Sun.

Lucy gets its name from the fossilized human ancestor, called “Lucy” by her discoverers, whose skeleton provided unique insight into human evolution. Likewise, the Lucy mission will revolutionize our knowledge of planetary origins and the formation of the solar system.

Studying Jupiter’s Trojan asteroids up close would help scientists hone their theories on how our solar system’s planets formed 4.5 billion years ago and why they ended up in their current configuration. “It’s almost like we’re traveling back in time,” said aerospace engineer Jacob Englander, who helped design Lucy’s trajectory while working at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

Continue reading “NASA’s Lucy Mission To Explore the Jupiter Trojan Asteroids — ‘It’s Almost Like We’re Traveling Back in Time’” »

Oct 3, 2021

The genetic symphony underlying evolution of the brain’s prefrontal cortex

Posted by in categories: evolution, genetics, neuroscience

The gene-regulatory mechanisms driving prefrontal cortex expansion.

Sep 30, 2021

No Shame In Wanting To Look Younger — It Is Natural And You Might As Well Live Longer

Posted by in categories: biological, evolution, life extension

Like many other living organisms, humans are born, survive, compete for resources, reach maturity, reproduce, take care of their young, sometimes the young of their young, continuously decline, and die. Evolution needs us for just two purposes – adapt and reproduce. But, unlike other species, humans are very conscious of their fate. Humans are very much aware that after reaching peak performance they will eventually grow old and die. We are very conscious of our fate after reaching peak performance – loss of function, frailty, and eventual loss of everything we worked so hard to earn.

We observe our parents, and other elderly around them, attend funerals, and understand that eventually we will get into this state. We are also very contempt with that fate as evolution made sure that. The more ambitious of us are trying to advance science, the rest seek refuge in religion, some in philosophy, some in accumulation of wealth, and some see the continuation of ourselves in our children. But despite the many technological advances transpiring in the laboratories all over the world, there is nothing we can do at this point to escape aging. There are diets, exercises, sleep, and supplements, but these provide very marginal benefits. We do not see 120+ old yoga and diet practitioners or marathon runners around. But these simple habits do help look younger longer. And many people that have very harmful habits like smoking but still diet and exercise to look younger.

Sep 30, 2021

No News Here, Just a Beautiful Globular Cluster Captured by Hubble. That is all

Posted by in categories: evolution, space

Here’s some beauty for your timeline: a stunning and ancient globular cluster captured by the venerable Hubble Space Telescope. The telescope’s Wide Field Camera 3 and Advanced Camera for Surveys was used to take this picture of ESO 520–21 (also known as Palomar 6), which is located about 25,000 light years away from Earth. Scientists say this globular cluster is probably about 12.4 billion years old.

Globular clusters are collections of tightly bound stars orbiting galaxies. Astronomers consider them as natural laboratories which enablie studies on the evolution of stars and galaxies. In particular, globular clusters could help researchers better understand the formation history and evolution of early type galaxies, as the origin of GCs seems to be closely linked to periods of intense star formation.

ESO 520–21 lies close to the center of the Milky Way, and from our vantage point on Earth, is in the constellation Ophiuchus. It’s location near the celestial equator is where interstellar gas and dust absorb starlight, which make observations more challenging.

Continue reading “No News Here, Just a Beautiful Globular Cluster Captured by Hubble. That is all” »

Page 1 of 6512345678Last