SCIENCE   Biology


This Brainless, Single-Celled Blob Can Make Complex ‘Decisions’ Tiny, brainless blobs might be able to make decisions: A single-celled organism can “change its mind” to avoid going near an irritating substance, according to new findings. Over a century ago, American zoologist Herbert Spencer Jennings conducted an experiment on a relatively large, trumpet-shaped, single-celled organism called Stentor roeselii. When Jennings released an irritating carmine powder around the organisms, he observed that they responded in a predictable pattern, he wrote in his findings, which he published in a text called “Behavior of the Lower Organisms” in 1906.


Soraya Sepahpour-Ulrich  says: Seems to me …..supremacy is intimidated … superiority. 10-12-2019 FB

Afghan girls’ robotics team who were denied entry to US wins top European competitionárcio S. Forti says-At first these girls are not ”Afghans”, they are Iranians, because this term does not represent a ethnic element, this expression was a English creation to promote the division between Iranians, the old tecnhic: ‘divide to prevail’. It seems that U.S., supremacy is intimidated by their protagonism in some areas.
➽=ALL Marion Mourtada
says-White, and especially Zionist influenced, supremacy makes Caucasian people stupid Mark Williams says-Indians are pretty brown, but I doubt the US would ban them. I think this is more about US geopolitical alliances and enmities than white supremacy.

Soraya Sepahpour-Ulrich SAYS- They tolerate a shade or color in their midst if that particular group promotes their agenda.


Warning: Potentially Toxic Chemicals in Nearly Half of Household Dust Samples Tested Chemicals commonly used in smartphone, television, and computer displays were found to be potentially toxic and present in nearly half of dozens of samples of household dust collected by a team of toxicologists led by the University of Saskatchewan (USask).

The international research team, led by USask environmental toxicologist John Giesy, is sounding the alarm about liquid crystal monomers–the chemical building blocks of everything from flat screen TVs to solar panels–and the potential threat they pose to humans and the environment.


Chemistry News 

SciTechDaily features the latest chemistry news and recent research articles from leading universities and institutes from around the world. Read interesting chemistry news and breakthrough research on related topics like Biochemistry, Chemical Engineering, Materials Science, Nanoparticles, and Polymers


Space News

Find all the latest space news right now on SciTechDaily. Discover the current news on space exploration, astronomy, astrophysics, cosmology, and more out of places like NASA, JPL, ALMA, and ESA. View incredible new space images from source like Hubble, Kepler,  James Webb space telescopes. Hot sub-topics include AstronomyNASA, Astrophysics, Black HolesCosmology, Exoplanets, Hubble, Goddard Space Flight Center, Mars, Cassini-Huygens, James Webb Telescope, Juno, Gravitational Waves, ESA, and Dark Energy.


Electric charges on dust grains may help explain how planets are born

A lab experiment suggests electrostatic forces are key to overcoming the ‘bouncing barrier’  Growing up is hard to do, especially for baby planets. Now, scientists may have uncovered the solution to one puzzle about protoplanetary growing pains. An obstacle to planetary formation, known as the bouncing barrier, hinders the clumping of dust particles that eventually form planets. But electric charge can provide extra stickiness that those cosmic motes need for clumps to keep growing, scientists report December 9 in Nature Physics. Testing that explanation required vigorously shaking thousands of small glass beads and catapulting them more than 100 meters skyward in an attempt to mimic planets’ birthplaces, protoplanetary disks.


DNA recovered from Arctic lakes holds clues for our future world

By Paul VoosenDec. SAN FRANCISCO, CALIFORNIA—High in the Canadian Arctic on Baffin Island, beneath 10 meters of water and many more of mud, sits a refrigerated archive of Earth’s past life. The deep sediments in a small lake called CF8 hold ancient pollen and plant fossils. But it now appears that the mud harbors something else: ancient DNA from as far back the Eemian, a period 125,000 years ago when the Arctic was warmer than today, left by vegetation that otherwise would have vanished without a trace.


How brightly the moon glows is a mystery, but maybe not for long

A telescope soaring on an airplane above the clouds has begun measuring moonlight  The lunar dark side may be the moon’s more mysterious face, but there’s something pretty basic scientists still don’t know about the bright side — namely, just how bright it is.

Current estimates of the moon’s brightness at any given time and vantage point are saddled with at least 5 percent uncertainty. That’s because those estimates are based on measurements from ground-based telescopes that gaze at the moon through the haze of Earth’s atmosphere.

NASA’s Parker probe reveals the sun’s rogue plasma waves and magnetic islands

Launched in 2018, the spacecraft has flown closer to our star than any other mission


➽=ALL Is Norton Antivirus Slowing Down Your PC

This article discusses common issues such as viruses and malwares. Slow downs may also occur due to fragmented disks, memory limitations, background programs or even viruses.



Granny killer whales pass along wisdom—and extra fish—to their grandchildren By Eva Frederick

Many human grandmothers love to spoil their grandchildren with attention and treats, and for good reason: Studies have shown that having a living grandmother increases a child’s chance of survival. Now, new research shows the same may be true for killer whales. By providing young animals with some freshly caught salmon now and then—or perhaps with knowledge on where to find it—grannies increase their grand-offspring’s chance of survival.



Should aging lab monkeys be retired to sanctuaries?

By David GrimmDec. 5, 2019 , 9:00 AM WINAMAC, INDIANA—It’s been a long road to retirement for Bush the monkey—and not just because he’s spent the past 15 hours in the back of a van motoring red-eye from New Jersey to Indiana.

For nearly his entire life, the 23-year-old macaque lived in a lab at Princeton University. There, researchers conducted MRI scans on him to understand which parts of the brain perceive faces, and he spent much of his time in an indoor cage. In 2017, with Bush suffering from arthritis and nearing the end of his life span, the lab decided to send him to a sanctuary.



Secret video shot inside German testing lab shows monkeys screaming out in pain…. WARNING: DISTRESSING FOOTAGE – The upsetting footage, taken at a lab in Hamburg, also shows cats and dogs that appear to be bleeding


➽=ALL Horrifying footage showing monkeys screaming in pain inside a German laboratory has prompted calls for a change to EU laws.The distressing video, released by animal rights activists, also shows cats and dogs that appear to be bleeding and even dying after undergoing cruel tests.


➽=ALL The future that graphene built Move over, flat carbon. Meet borophene, phosphorene and the rest of the next generation of “atomically thin” super-materials.

The wonder material graphene — an array of interlinked carbon atoms arranged in a sheet just one atom thick — promised a world of applications, including super-fast electronics, ultra-sensitive sensors and incredibly durable materials. After a few false starts, that promise is close to realization. And a suite of other extremely thin substances is following in its wake.


➽=ALL The weapons of sexual rivalry Male-male competition, and sometimes female preferences, have driven arms races for the flashiest horns, antlers, pincers, tusks and claws

In the vast arsenal of animal weaponry, the most exaggerated, elaborate and diverse devices such as tusks, claws and antlers have not been shaped by a need to fend off fierce predators. Rather, these impressive forms are driven by sex.

➽=ALL “Everybody understands at a gut level that it’s usually males that have flashy displays or weapons like tusks and antlers,” says Doug Emlen, an animal weapon expert at the University of Montana in Missoula. Biologists say that these fantastic shapes — from the giant curved tusks of woolly mammoths to the nightmarish jaws of stag beetles — evolved to ward off competition from rival males and to impress females.



Polymers promise a more flexible artificial retina Organic semiconductors can link up with brain cells to send and receive signals. They may find a use in sight-restoring prostheses. 

It’s not the most common cause of blindness. That dubious distinction goes to diabetes, followed by maladies such as cataracts, glaucoma and macular degeneration. But for the one person in 4,000 afflicted with the genetic disorder retinitis pigmentosa, it is devastating — a slow, inexorable death of the rod and cone cells that serve as the eye’s light detectors. Night vision is the first to go, usually in childhood.



A New Understanding How Spirit and Opportunity Changed Our View of Mars

The Mars Exploration Rover science team gathered in Pasadena, CA for our final meeting on 11 June 2019, and I wondered if I had ordered enough Thai food. I had been the deputy project scientist for the Mars Exploration Rover Opportunity for 3 years, capping 15 years of involvement with the mission as a graduate, an undergraduate, and even a high school student. That night, I was responsible for organizing an evening celebration bringing together engineers and scientists to toast the end of the surface mission. For all of us, the rovers had been a part of our daily lives for years or even decades, and this group was just a small subset of the thousands of people who had contributed to making the mission a reality. It was important that we marked the achievement appropriately.



Carbon Dioxide Emissions on Steady Upward Trend Carbon Tracker have calculated some provisional data for global carbon dioxide emissions this year. They show a rise of 0.6%, slightly slower than the last two years, but this is largely due to a slowdown in economic growth.



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