Tag Archives | Science

Hear Dr. Carl Hart Eviscerate Drug Propaganda

HartPhotoVia Midwest Real

Dr. Carl Hart is an Associate Professor of Psychology and Psychiatry at Columbia University and the author of High Price

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Before we were engulfed in a tsunami of boundless digital knowledge containing more truth (and garbage) than we could ever digest in thousands of lifetimes, we lived in an incredibly different world. If you were a child of the 90’s like myself, you were constantly inundated with overly-simplistic catchphrase propaganda– “This is your brain on drugs,” “just say no,” the list goes on. I specifically remember being taught in school that marijuana was supremely dangerous because it was a “gateway drug.” The connotation being that if you so much as tried it, you’d probably wind up a strung-out, do-nothing idiot with a Kentucky-fried brain who’d never amount to anything.

This tireless barrage of indoctrination has forged us into a population that looks to traditional sources of authority with an immense amount of skepticism.Read the rest

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Researchers may have solved origin-of-life conundrum

Shan Sheehan (CC BY 2.0)

Shan Sheehan (CC BY-ND 2.0)

Which came first, the chicken or the egg? Researchers may have come up with the answer.

Robert Service via AAAS:

The origin of life on Earth is a set of paradoxes. In order for life to have gotten started, there must have been a genetic molecule—something like DNA or RNA—capable of passing along blueprints for making proteins, the workhorse molecules of life. But modern cells can’t copy DNA and RNA without the help of proteins themselves. To make matters more vexing, none of these molecules can do their jobs without fatty lipids, which provide the membranes that cells need to hold their contents inside. And in yet another chicken-and-egg complication, protein-based enzymes (encoded by genetic molecules) are needed to synthesize lipids.

Now, researchers say they may have solved these paradoxes. Chemists report today that a pair of simple compounds, which would have been abundant on early Earth, can give rise to a network of simple reactions that produce the three major classes of biomolecules—nucleic acids, amino acids, and lipids—needed for the earliest form of life to get its start.

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New quantum mechanics theory says parallel universes exist, interact

NRAO

NRAO

The new theory, “Many Interacting Worlds” (MIW), states that parallel universes interact and that scientists may be able to test for this.

via RT.com:

To the average person, quantum mechanics is the convoluted, science fiction-y branch of physics. A radical new theory plays into that, proposing that parallel universes exist and interact with each other ‒ and that scientists may be able to test for them.

Prof. Howard Wiseman, a physicist at Griffith University in Brisbane, Australia, along with his collaborators Dr. Michael Hall, also of Griffith University, and University of California, Davis mathematician Dr. Dirk-Andre Deckert, published their new “many interacting worlds” (MIW) theory in the journal Physical Review X. They posited that other universes are real, exist in vast numbers and exert influence on each other.

“The idea of parallel universes in quantum mechanics has been around since 1957,” Wiseman said in a statement. “In the well-known ‘Many-Worlds Interpretation’, each universe branches into a bunch of new universes every time a quantum measurement is made.

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Theories, Mysteries and Mistakes: Contradictions in Reality

We assume our theories about the world are gradually uncovering the way it really is. Yet from quantum mechanics to post-structuralism, the reality the theories describe is contradictory. Should we conclude that the world is essentially unintelligible? Or is it simply the theories that are mistaken?

Watch more videos on iai.tv

The Panel

Founder of Loop Quantum Gravity Carlo Rovelli, post-postmodernist Hilary Lawson, and philosopher of mind Jennifer Hornsby confront the limits of our understanding.

You can find loads more debates, articles and free online courses in philosophy, science, politics and culture at IAI TV.

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Inside the Weird World of 3D Printed Body Parts

3D printed tissue construct in a Petri dish (right after printing). Photo courtesy of University of Iowa.

3D printed tissue construct in a Petri dish (right after printing). Photo courtesy of University of Iowa.

Via Andrew Leonard at Medium:

Laura Bosworth wants to 3D print breast nipples on demand. The CEO of the Texas startup TeVido Biodevices is betting on a future in which survivors of breast cancer who have undergone mastectomies will be able to order up new breasts printed from their own living cells.

“Everyone,” she says, “knows a woman who has had breast cancer.” Right now their options are limited. Reconstructed nipples using state-of-the-art plastic surgery techniques, she says, “tend to flatten and fade and don’t last very long.” A living nipple built from the patient’s own fat cells, and reconstructed to the precise specification of the original nipple, could go a long way to ameliorating the psychological trauma often associated with mastectomies.

Bosworth readily acknowledges that significant obstacles must be overcome before 3D printed breast parts become an affordable reality.

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Ending Aging with Dr. Aubrey de Grey | Midwest Real

aubrey de grey

Via Midwest Real

Dr. Aubrey de Grey is Co-Founder and Chief Science Officer at the SENS Research Foundation, a nonprofit dedicated to ending aging. 

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The march of time spares none, neither rich, famous nor powerful. The deep, existential angst that comes part and parcel with that knowledge has, no doubt, haunted mankind from the very first moment we became self-aware. It’s also the one obstacle we’ve encountered as a species we just take for granted as the unassailable natural order of things.

It’s incredible really- we’ve walked the moon, we fly across the world and we transmit words through the air as if it’s trivial. Yet, for some reason when it comes to aging, we yield. Even the most brilliant men among us don’t consider the possibility that we might be able to circumvent becoming old and dying.

Actually, some brilliant men do.

Ending aging has become the life’s work of our guest, Dr.Read the rest

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Einstein’s Limits: Taking General Relativity to New Extremes

General relativity tells us that gravity is not a force, but a curvature of spacetime. Credit: NASA.

General relativity tells us that gravity is not a force, but a curvature of spacetime.
Credit: NASA.

Via Tanya Lewis at Live Science:

A century ago this year, a young Swiss physicist, who had already revolutionized physics with discoveries about the relationship between space and time, developed a radical new understanding of gravity.

In 1915, Albert Einstein published his general theory of relativity, which described gravity as a fundamental property of space-time. He came up with a set of equations that relate the curvature of space-time to the energy and momentum of the matter and radiation that are present in a particular region.

Today, 100 years later, Einstein’s theory of gravitation remains a pillar of modern understanding, and has withstood all the tests that scientists could throw at it. But until recently, it wasn’t possible to do experiments to probe the theory under extreme conditions to see whether it breaks down.

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99 Percent Certainty Hormone-Altering Chemicals Cause Serious Health Problems

Avoiding the chemically treated foods produced by agribusiness may be well worth the Whole Paycheck premium, per this report from National Geographic, although the problems are not restricted to foods, spanning all sorts of plastics, flame retardants and even paper receipts:

Exposure to hormone-disrupting chemicals is likely leading to an increased risk of serious health problems costing at least $175 billion (U.S.) per year in Europe alone, according to a study published Thursday.

Crop spraying - geograph.org.uk - 274618

Chemicals that can mimic or block estrogen or other hormones are commonly found in thousands of products around the world, including plastics, pesticides, furniture, and cosmetics.

The new research estimated health care costs in Europe, where policymakers are debating whether to enact the world’s first regulations targeting endocrine disruptors. The European Union’s controversial strategy, if approved, would have a profound effect on industries and consumer products worldwide.

Linda Birnbaum, the leading environmental health official in the U.S.

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Wind Energy Was Largest Source Of New US Electricity In 2014

Joshua S. Hill Via CleanTechnica:

The American Wind Energy Association has commented on the US Department of Energy’s data released for 2014 this week, which showed that wind energy added “significantly more” electricity than any other resource across the year.

According to Department of Energy (DoE) Energy Information Administration (EIA) statistics, wind energy generated 4.4% of all electricity during 2014, maintaining its position as the country’s fifth largest electricity source.

Wind energy generated a total of 181,791 GWh of electricity in 2014, up 13,951 GWh over 2013 levels.

EIA-1

 

Continue reading. (And please mark this article as “interesting” over at CleanTechnica if you found it informative.)

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