Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror
×
The Media

Skeptics Would Like Media To Stop Calling Science Deniers 'Skeptics' 719

Layzej writes: Prominent scientists, science communicators, and skeptic activists, are calling on the news media to stop using the word "skeptic" when referring to those who refuse to accept the reality of climate change, and instead refer to them by what they really are: science deniers. "Not all individuals who call themselves climate change skeptics are deniers. But virtually all deniers have falsely branded themselves as skeptics. By perpetrating this misnomer, journalists have granted undeserved credibility to those who reject science and scientific inquiry."
Science

Scientists Discover That Exercise Changes Your DNA 56

HughPickens.com writes The human genome is astonishingly complex and dynamic, with genes constantly turning on or off, depending on what biochemical signals they receive from the body. Scientists have known that certain genes become active or quieter as a result of exercise but they hadn't understood how those genes knew how to respond to exercise. Now the NYT reports that scientists at the Karolinska Institute in Stockholm have completed a study where they recruited 23 young and healthy men and women, brought them to the lab for a series of physical performance and medical tests, including a muscle biopsy, and then asked them to exercise half of their lower bodies for three months. The volunteers pedaled one-legged at a moderate pace for 45 minutes, four times per week for three months. Then the scientists repeated the muscle biopsies and other tests with each volunteer. Not surprisingly, the volunteers' exercised leg was more powerful now than the other, showing that the exercise had resulted in physical improvements. But there were also changes within the exercised muscle cells' DNA. Using technology that analyses 480,000 positions throughout the genome, they could see that new methylation patterns had taken place in 7,000 genes (an individual has 20–25,000 genes).

In a process known as DNA methylation, clusters of atoms, called methyl groups, attach to the outside of a gene like microscopic mollusks and make the gene more or less able to receive and respond to biochemical signals from the body. In the exercised portions of the bodies, many of the methylation changes were on portions of the genome known as enhancers that can amplify the expression of proteins by genes. And gene expression was noticeably increased or changed in thousands of the muscle-cell genes that the researchers studied. Most of the genes in question are known to play a role in energy metabolism, insulin response and inflammation within muscles. In other words, they affect how healthy and fit our muscles — and bodies — become. Many mysteries still remain but the message of the study is unambiguous. "Through endurance training — a lifestyle change that is easily available for most people and doesn't cost much money," says Sara Lindholm, "we can induce changes that affect how we use our genes and, through that, get healthier and more functional muscles that ultimately improve our quality of life."
Science

Scientists Discover That Exercise Changes Your DNA 56

HughPickens.com writes The human genome is astonishingly complex and dynamic, with genes constantly turning on or off, depending on what biochemical signals they receive from the body. Scientists have known that certain genes become active or quieter as a result of exercise but they hadn't understood how those genes knew how to respond to exercise. Now the NYT reports that scientists at the Karolinska Institute in Stockholm have completed a study where they recruited 23 young and healthy men and women, brought them to the lab for a series of physical performance and medical tests, including a muscle biopsy, and then asked them to exercise half of their lower bodies for three months. The volunteers pedaled one-legged at a moderate pace for 45 minutes, four times per week for three months. Then the scientists repeated the muscle biopsies and other tests with each volunteer. Not surprisingly, the volunteers' exercised leg was more powerful now than the other, showing that the exercise had resulted in physical improvements. But there were also changes within the exercised muscle cells' DNA. Using technology that analyses 480,000 positions throughout the genome, they could see that new methylation patterns had taken place in 7,000 genes (an individual has 20–25,000 genes).

In a process known as DNA methylation, clusters of atoms, called methyl groups, attach to the outside of a gene like microscopic mollusks and make the gene more or less able to receive and respond to biochemical signals from the body. In the exercised portions of the bodies, many of the methylation changes were on portions of the genome known as enhancers that can amplify the expression of proteins by genes. And gene expression was noticeably increased or changed in thousands of the muscle-cell genes that the researchers studied. Most of the genes in question are known to play a role in energy metabolism, insulin response and inflammation within muscles. In other words, they affect how healthy and fit our muscles — and bodies — become. Many mysteries still remain but the message of the study is unambiguous. "Through endurance training — a lifestyle change that is easily available for most people and doesn't cost much money," says Sara Lindholm, "we can induce changes that affect how we use our genes and, through that, get healthier and more functional muscles that ultimately improve our quality of life."

Submission + - Day One Review: Elite Dangerous (xp4t.com)

An anonymous reader writes: I’ve spent the last few weeks with Elite: Dangerous (since Gamma 1.0 was released to us Kickstarters), and about four problem-free hours tonight, on launch day (and I’ll be coming back here periodically as time passes and the game grows). Probably about an hour of all of that time was spent just scrolling through the key bindings, and subsequently pressing keys on my keyboard that I rarely, if ever touch. Yes, after 30 years Elite is back, and it’s already eating my life.

Submission + - Quantum physics just got less complicated (phys.org)

wabrandsma writes: From phys.org:
Here's a nice surprise: quantum physics is less complicated than we thought. An international team of researchers has proved that two peculiar features of the quantum world previously considered distinct are different manifestations of the same thing. The result is published 19 December in Nature Communications.
Patrick Coles, Jedrzej Kaniewski, and Stephanie Wehner made the breakthrough while at the Centre for Quantum Technologies at the National University of Singapore. They found that 'wave-particle duality' is simply the quantum 'uncertainty principle' in disguise, reducing two mysteries to one.

Submission + - Nicholas Negroponte on the Future of Learning: Nanobots Will Hack the Brain (hacked.com)

giulioprisco writes: Nicholas Negroponte describes future nanobots hacking our neurons to make us learn faster and better. Able to communicate wirelessly with each other and with the external world, the nanobots would hack the brain like read/write computer memory. Negroponte says: '[I]n theory you could load Shakespeare into your bloodstream and as the little robots get to the various part of the brain they deposit little pieces of Shakespeare or the little pieces of French if you want to learn how to speak French. So in theory you can ingest information.'
NASA

Kepler Makes First Exoplanet Discovery After Mission Reboot 28

astroengine writes NASA's Kepler space telescope has detected its first new extrasolar planet after mission engineers were able to save the mission from a premature death after two of the exoplanet hunter's four stabilizing reaction wheels failed last year. Called "K2," the extended mission arose from an "innovative idea" that appears to have given the prolific telescope a new lease on life. "Last summer, the possibility of a scientifically productive mission for Kepler after its reaction wheel failure in its extended mission was not part of the conversation," said Paul Hertz, NASA's astrophysics division director at the agency's headquarters in Washington D.C. "Today, thanks to an innovative idea and lots of hard work by the NASA and Ball Aerospace team, Kepler may well deliver the first candidates for follow-up study by the James Webb Space Telescope to characterize the atmospheres of distant worlds and search for signatures of life."
NASA

Kepler Makes First Exoplanet Discovery After Mission Reboot 28

astroengine writes NASA's Kepler space telescope has detected its first new extrasolar planet after mission engineers were able to save the mission from a premature death after two of the exoplanet hunter's four stabilizing reaction wheels failed last year. Called "K2," the extended mission arose from an "innovative idea" that appears to have given the prolific telescope a new lease on life. "Last summer, the possibility of a scientifically productive mission for Kepler after its reaction wheel failure in its extended mission was not part of the conversation," said Paul Hertz, NASA's astrophysics division director at the agency's headquarters in Washington D.C. "Today, thanks to an innovative idea and lots of hard work by the NASA and Ball Aerospace team, Kepler may well deliver the first candidates for follow-up study by the James Webb Space Telescope to characterize the atmospheres of distant worlds and search for signatures of life."
Blackberry

Review: The BlackBerry Classic Is One of the Best Phones of 2009 132

Molly McHugh writes When Apple launched the iPhone in 2007, and I owned a BlackBerry Curve. To me, my BlackBerry was close to being the absolute perfect smartphone. Today, BlackBerry revealed the Classic, a phone that is designed to make me—and everyone who owned a BlackBerry before the touchscreen revolution—remember how much we loved them.
Blackberry

Review: The BlackBerry Classic Is One of the Best Phones of 2009 132

Molly McHugh writes When Apple launched the iPhone in 2007, and I owned a BlackBerry Curve. To me, my BlackBerry was close to being the absolute perfect smartphone. Today, BlackBerry revealed the Classic, a phone that is designed to make me—and everyone who owned a BlackBerry before the touchscreen revolution—remember how much we loved them.
Earth

Satellite Captures Glowing Plants From Space 40

sciencehabit writes About 1% of the light that strikes plants is re-emitted as a faint, fluorescent glow—a measure of photosynthetic activity. Today, scientists released a map of this glow as measured by the Orbiting Carbon Observatory-2, a NASA satellite launched in July with the goal of mapping the net amount of carbon in the atmosphere. The map reveals that tropical rainforests near the equator are actively sucking up carbon, while the Corn Belt in the eastern United States, near the end of its growing season, is also a sink. Higher resolution fluorescence mapping could one day be used to help assess crop yields and how they respond to drought and heat in a changing climate.

Submission + - Skeptics would like media to stop calling science deniers "skeptics" (csicop.org)

Layzej writes: Prominent scientists, science communicators, and skeptic activists, are calling on the news media to stop using the word “skeptic” when referring to those who refuse to accept the reality of climate change, and instead refer to them by what they really are: science deniers. “Not all individuals who call themselves climate change skeptics are deniers. But virtually all deniers have falsely branded themselves as skeptics. By perpetrating this misnomer, journalists have granted undeserved credibility to those who reject science and scientific inquiry.”

Submission + - Skeptics would like media to stop calling science deniers "skeptics" (csicop.org)

Layzej writes: Prominent scientists, science communicators, and skeptic activists, are calling on the news media to stop using the word “skeptic” when referring to those who refuse to accept the reality of climate change, and instead refer to them by what they really are: science deniers. “Not all individuals who call themselves climate change skeptics are deniers. But virtually all deniers have falsely branded themselves as skeptics. By perpetrating this misnomer, journalists have granted undeserved credibility to those who reject science and scientific inquiry.”

Comment Maybe they could re-shoot it, varying the script - (Score 0) 230

- so that it's set in Cuba instead.

(I am not kidding. In fact, call it THE INTERVIEW II: HAVANA GILA MONSTER" and make frequent in-joke references to the previous one, even though -- especially because! -- nearly no one has seen it.)

But this time, assassinate Castro, instead.

 

Slashdot Top Deals

In any formula, constants (especially those obtained from handbooks) are to be treated as variables.

Working...