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Science!

This group is for all science lovers and science fans, you don't need to be a scientist to enjoy talking or learning about science!

Website: http://atheistuniverse.net/group/science
Location: #science
Members: 103
Latest Activity: Oct 14

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Discussion Forum

Super weeds in the US

Started by Davy. Last reply by Chris Aug 18. 1 Reply

New York (AFP) - The United States is facing an epidemic of herbicide-resistant "superweeds" that some activists and researchers are blaming on GMO's, an accusation rejected by industry giants.According to a recent study, the situation is such that…Continue

Tags: monsanto, chemical, herbicide, GMO, superweed

Science Bits, News, Videos

Started by Adriana. Last reply by doone Jul 9. 1363 Replies

This discussion is to have a recurrent thread for science news, tidbits, quick…Continue

Tags: science videos, science quick facts, science news

The Denisova genome

Started by Adriana. Last reply by doone Dec 5, 2013. 6 Replies

Remember the 40,000 year-old Denisova finger bone that yielded sufficient DNA to…Continue

Tags: evolution, human, genome, DNA, hominin

Platypus Godzilla.

Started by Davy. Last reply by Davy Nov 20, 2013. 5 Replies

And you thought the platypus was a nice, cuddly little monotreme. You would not have thought so 5 to 15 million years ago. Palaeontologists have uncovered the fossil of a platypus that looks as though it is on steroids.  The platypus dub the…Continue

Tags: Palaeontologists, Godzilla, platypus

Aussie algae fuel green oil hope

Started by Davy Oct 20, 2013. 0 Replies

Aussie algae fuel green oil hopeDespite the claims of some, commercially viable fuels from algae have not yet been developed. But newly trialled native algae species provide real hope, a Queensland scientist has found.Dr Evan Stephens and the team…Continue

Tags: algae, hope, bio-fuel, East, middle

Mystery moss rediscovered

Started by Davy. Last reply by Davy Oct 20, 2013. 2 Replies

News from James Cook University. Mystery moss rediscoveredA botanical puzzle more than 150 years old could soon be solved, thanks to a discovery by a second-year botany student in Queensland’s far north.James Cook University student Megan Grixti…Continue

Tags: botany, student, sorapilla, papuana, 150-years

Mandating Scientific Discovery Never Works But politicians can’t seem to grasp that.

Started by Neal. Last reply by Chris Jun 24, 2013. 1 Reply

GOP decides that research should be legislated. Usual nonsense.By Lawrence Krauss|Posted Friday, June 21, 2013, at 7:30 AM…Continue

Tags: work, doesn't, research, science, mandating

Ancient DNA Found Hidden Below Sea Floor

Started by Adriana May 11, 2013. 0 Replies

The deep sea floor (5,000 meters below the surface) is the world's repository of most ancient DNA so far. DNA has just been found of 32,000 year old unicellular organisms, belong to radiolarians and foraminifera to fish out DNA from those groups.…Continue

Tags: sea, deep, DNA, fossil

Florida schoolgirl charged with felonies for science experiment

Started by Neal May 3, 2013. 0 Replies

No science for you woman! Photo: FreeLearningLife - FlickrWednesday, May 1, 2013 -…Continue

Tags: felony, a, becomes, experiment, science

L-carnitine and heart disease

Started by Adriana. Last reply by Davy Apr 14, 2013. 7 Replies

Bad news for meat eaters: even if the meat is lean, eating red meat will still increase your risk for heart disease. The culprits are the bacteria in your gut. They will transform l-carnitine, a compound found in red meat and to a lesser extent in…Continue

Tags: microbiome, health, bacteria, disease, heart

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Comment by Hope on October 14, 2014 at 11:19am

Giant leap against diabetes

Ability to produce embryonic stem cells will allow researchers to push faster toward cure

Harvard stem cell researchers announced today that they have made a giant leap forward in the quest to find a truly effective treatment for type 1 diabetes, a disease that affects an estimated 3 million Americans at a cost of about $15 billion annually.

With human embryonic stem cells as a starting point, the scientists were for the first time able to produce, in the kind of massive quantities needed for cell transplantation and pharmaceutical purposes, human insulin-producing beta cells equivalent in most every way to normally functioning beta cells.

Doug Melton, who led the work, said he hopes to have human transplantation trials using the cells under way within a few years. Twenty-three years ago, when his infant son Sam was diagnosed with type 1 diabetes, Melton dedicated his career to finding a cure for the disease.

“We are now just one preclinical step away from the finish line,” said Melton, whose daughter Emma also has type 1 diabetes.

A report on the new work is being published today by the journal Cell.

http://news.harvard.edu/gazette/story/2014/10/giant-leap-against-di... 

Comment by doone on June 6, 2014 at 8:09am
17 Most Iconic Quotes From Breaking Bad

When to use: when observing solutions to any pressing problem.

Comment by doone on May 18, 2014 at 3:32pm

Rethinking indigenous Australia's agricultural past

Comment by doone on January 1, 2014 at 8:54am

Neanderthal Genome Shows Early Human Interbreeding, Inbreeding

Population geneticists have produced the first high-quality genome of a Neanderthal, allowing comparison with the genomes of modern humans and Denisovans. The analysis shows a long history ... 
Comment by doone on December 30, 2013 at 9:46am

 Leonardo Da Vinci

Leonardo Da Vinci

“Great man, great beard”

Nationality: Italian
Field: Everything
Contributions: Leonardo invented so much stuff most of it was re-invented by other people because no one ever really got round to going through all his notebooks to work out what he wrote down. His contributions to the field of anatomy were extensive and legendary, and he also was a vegetarian who would buy and then free caged birds, which is awesome.

Beard Da Vinci has been so influential in everything he did I’m pretty sure most subsequent scientists have a beard is because of Leo.

Comment by Davy on November 21, 2013 at 1:02pm

Synopsis: Entangled through a Wormhole

Quantum entanglement is weird enough, but it might get weirder still through a possible association with hypothetical wormholes. Over the past year, theorists have been hard at work exploring the entanglement of two black holes. A pair of papers in Physical Review Letters advances the story by showing that a string-based representation of two entangled quarks is equivalent to the spacetime contortions of a wormhole.

A common feature of entanglement and wormholes is that they both seemingly imply faster-than-light travel. If one imagines two entangled particles separated by a large distance—a so-called Einstein-Podolsky-Rosen (EPR) pair—then a measurement of one has an immediate effect on the measurement probabilities of the other, as if information travels instantaneously between them. Similarly, a wormhole—or Einstein-Rosen (ER) bridge—is a “shortcut” connecting separate points in space, but no information can actually pass through. Recent work has shown that the spacetime geometry of a wormhole is equivalent to what you’d get if you entangled two black holes and pulled them apart—an equivalence that can be summarized by “ER = EPR.”

The latest papers in this development extend the equivalence beyond black holes to quarks. As previous studies have shown, two entangled quarks can be represented as the endpoints of a string in a higher dimensional space, where certain calculations end up being easier. Kristan Jensen of the University of Victoria, Canada, and Andreas Karch of the University of Washington, Seattle, imagine the entangled quarks are accelerating away from each other, so that they are no longer in causal contact. In this case, the connecting string becomes mathematically equivalent to a wormhole. Using a different approach, Julian Sonner from the Massachusetts Institute of Technology, Cambridge, has derived the same result starting from quark/antiquark creation in a strong electric field (the Schwinger effect). The wormhole connection may provide new insights into entanglement, as suggested by calculations that equate the entropy of the wormhole to that of the quarks. –Michael Schirber

Comment by Davy on November 8, 2013 at 2:20pm

Marrow Transplant for Child with Leukaemia cures Peanut Allergy.

In a rare medical twofer, a child with leukemia who underwent a bone marrow transplant has emerged free of not only his cancer but his peanut allergy.

The child was diagnosed with the allergy at 15 months, said Steven Weiss, an allergist in Syosset, N.Y. At age 4, the boy developed acute lymphocytic leukemia.

He had received chemotherapy but suffered relapses of his cancer. At age 10, he underwent a bone marrow transplant, an arduous procedure that kills off a patient’s existing bone marrow and the cancerous cells and then replaces them with marrow cells from a healthy donor. The boy’s donor had no known allergy. A year later, the boy’s immune system had recovered and tests revealed no peanut allergy, Weiss said.

Weiss’ collaborator Yong Luo, an allergist in Great Neck, N.Y., said allergies have sometimes transferred from a marrow donor to a patient but have rarely been eradicated this way in a marrow recipient. Food allergies are abnormal immune reactions to a food protein. Weiss and Luo hypothesize that the mechanism underlying this aberrant immunity might dwell in the early stages of immune cell development in the marrow.

Luo will present the findings in Baltimore November 10 at a meeting of the American College of Allergy, Asthma & Immunology.

Courtesy of Science News.

Comment by Davy on November 5, 2013 at 3:15pm

Theoretical physics: The origins of space and time. 

Many researchers believe that physics will not be complete until it can explain not just the behaviour of space and time, but where these entities come from.

Read the full article @ Nature

Comment by Chris on October 23, 2013 at 6:00pm

U.S. Science Reporters Becoming an Endangered Species

CHATTANOOGA, Tennessee, Oct 15 2013 (IPS) - The news for environmental journalism in the United States is grim and getting grimmer.

On Mar. 1, the New York Times announced it was discontinuing the Green Blog that tracked environmental and energy news. In January, the paper had dismantled its three-year-old environment pod.

This year, too, Johns Hopkins University retired its 30-year-old science writing programme, following in the footsteps of Columbia University which, in 2009, closed its earth and environmental science journalism programme because of a poor job market.

Like climate change, the demise of science reporting is a slowly unfolding tragedy, say many environmental journalists in the United States.

At a time when conversations should be revolving around climate change, energy, natural resources and sustainable development, space for environmental reporting and coverage in the United States seems to be shrinking.

The latest report from the Intergovernmental Panel on Climate Change, the fifth in a series, says the evidence is now overwhelming that humans are the primary drivers of global warming.

“A potential knowledge gap arises as environmental journalism shrinks. The public learns less about environmental and related health issues, but at the same time may fall prey to unscientific claims that often hold sway on the Internet,” a worried Samuel Fromartz, the editor-in-chief of the non-profit Food & Environment Reporting Network (FERN), told IPS on the sidelines of the 23rd annual conference of the Society of Environmental Journalists, held earlier this month in Chattanooga, Tennessee.

“Without journalists to uncover stories and speak to authoritative sources, the public loses,” he said.

More terrible news here.

Another reason to subscribe to the Guardian, or non-profit journalism over the Times.

Comment by Chris on September 23, 2013 at 2:10am

How Birds Got Their Wings

Birds split from dinosaurs when their front limbs got longer and their back limbs got shorter, according to new research.

This change may have been critical in allowing early birds to evolve flight, and then to exploit the forest canopy, the authors conclude.

Birds originated from a group of small, meat-eating theropod dinosaurs called maniraptorans sometime around 150 million years ago. Recent findings from around the world show that many maniraptorans were very bird-like, with feathers, hollow bones, small body sizes, and high metabolic rates.

ArchaeopteryxArchaeopteryx, believed to be a transitional species between theropod dinosaurs and birds, had longer forelimbs and shorter hind limbs than its ancestors. (Credit: Michael Skrepnick/McGill)

But the question remains, at what point did forelimbs evolve into wings—making it possible to fly?

McGill University professor Hans Larsson and a former graduate student Alexander Dececchi set out to answer that question by examining fossil data, greatly expanded in recent years, from the period marking the origin of birds.

In a study published in the September issue of Evolution, Larsson and Dececchi find that throughout most of the history of carnivorous dinosaurs, limb lengths showed a relatively stable scaling relationship to body size. This is despite a 5000-fold difference in mass between Tyrannosaurus rex and the smallest feathered theropods from China.

More Here

 
 
 

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