Clipmarks | wildcat's science collection

Buy immortality - name a new species

Tue, 08 Jul 2008 13:23:17 GMT

clipped by: wildcat

Jeff Goodhartz is single and has no children. But he wanted to ensure the family name would live on after he's gone.

So he paid $5,000 to have a newfound sea worm given the Goodhartz name, "goodhartzorum."

"This really jazzes me up," said the 55-year-old high school math teacher whose namesake is translucent with a flamboyant blue tuft. "It will be out there, the family name."

And it will be swimming in the Belize mangroves where someone else discovered it.

Goodhartz bought the naming rights from the Scripps Institution of Oceanography, which unveiled its name-a-species program earlier this year. This modern twist on taxonomy is a way to raise research money, and lots of groups have been doing it.

But its growing popularity has rekindled a debate over whether the practice invites fake discoveries and has led to a push for oversight.

Tags: species, naming, immortality

Biologically Inspired Ocean Power Systems

Sun, 06 Jul 2008 01:49:15 GMT

clipped by: wildcat

Clip Source: www.biopowersystems.com

BioPower Systems is commercialising ocean power conversion technologies. Through application of biomimicry, we have adopted nature's mechanisms for survival and energy conversion in the marine environment and have applied these in the development of our proprietary wave and tidal power systems.

Our technologies inherit benefits developed during 3.8 Billion years of evolutionary optimization in nature’s ocean laboratory.The resulting systems move and sway in tune with the forces of the ocean, and naturally streamline when extreme conditions prevail. This leads to lightweight designs and associated low costs.

The inherently simple bioWAVE™ and bioSTREAM™ devices are designed to supply utility-scale grid-connected renewable energy using efficient modular systems. These systems will reside beneath the ocean surface, out of view, and in harmony with the living creatures that inspired their design.

Tags: biology, ocean, energy, biomimicry, wave, tidal, power

Stem Cells 2.0: Scientists Make Revolutionary Advance

Fri, 04 Jul 2008 12:07:19 GMT

clipped by: wildcat

Clip Source: www.dailygalaxy.com

A while back scientists were making revolutionary breakthroughs in stem cell research. Unfortunately they fell foul of interpretations of thousand year old texts in foreign languages, and a government with the scientific understanding of a squashed grape said "Sorry, our kind and loving God requires that people continue to suffer from Parkinson's, anemia, and various other horrible ailments." Luckily, scientists are awesome and did the obvious thing - make ANOTHER revolutionary breakthrough to get around the problem.

The previous problem with stem cells was that they came from aborted or otherwise unviable fetuses. Note that these fetuses had been terminated anyway, and the only issue now was whether it was more moral to chuck the goo in a bin and burn it, or use it to help cure the sick. The ethical answer, apparently, isn't what you think.

This issue can now be sidestepped with the creation of induced pluripotent stem cells (IPS) from any kind of tissue

Tags: stem cells, breakthrough, medicine

Looking for the Fountain of Youth? Cut your calories

Fri, 04 Jul 2008 09:46:52 GMT

clipped by: wildcat

Clip Source: www.physorg.com

Want to slow the signs of aging and live longer? New Saint Louis University research suggests cutting back on calories could be a promising strategy.

Calorie restriction has long been shown to slow the aging process in rats and mice. While scientists do not know how calorie restriction affects the aging process in rodents, one popular hypothesis is that it slows aging by decreasing a thyroid hormone, triiodothyronine (T3), which then slows metabolism and tissue aging.

A new study in the June 2008 issue of Rejuvenation Research, found that calorie restriction – cutting approximately 300 to 500 calories per day – had a similar biological effect in humans and, therefore, may slow the aging process.

"Our research provides evidence that calorie restriction does work in humans like it has been shown to work in animals. The next step is to determine if this in fact slows age-related tissue deterioration. The only way to be certain, though, is to do a long-term study."

Tags: longevity, calorie restriction

'Mind's eye' influences visual perception

Wed, 02 Jul 2008 10:14:20 GMT

clipped by: wildcat
clipper's remarks: ..even a single instance of imagery can tilt how you see the world one way or another..

Clip Source: www.physorg.com

Letting your imagination run away with you may actually influence how you see the world. New research from Vanderbilt University has found that mental imagery—what we see with the "mind's eye"—directly impacts our visual perception.

"We found that imagery leads to a short-term memory trace that can bias future perception," says Joel Pearson, research associate in the Vanderbilt Department of Psychology. and lead author of the study. "This is the first research to definitively show that imagining something changes vision both while you are imagining it and later on."

"You might think you need to imagine something 10 times or 100 times before it has an impact,"

Our results show that even a single instance of imagery can tilt how you see the world one way or another, dramatically, if the conditions are right."

"These findings are important because they suggest a potential mechanism by which top-down expectations or recollections of previous experiences might shape perception itself,"

Tags: 'mind's eye', visual perception, brain, imagination

“What is Life?” Evolution of Robots is Causing Scientists to Question

Tue, 01 Jul 2008 10:04:36 GMT

clipped by: wildcat
clipper's remarks: “Robots are not human, but humans aren’t the only things that have emotions,” she said. “The question for robots is not, Will they ever have human emotions? Dogs don’t have human emotions, either, but we all agree they have genuine emotions. The question is, what are the emotions that are genuine for the robot?”

Clip Source: www.dailygalaxy.com

There is ongoing debate about what constitutes life. Synthetic bacteria for example, are created by man and yet also alive. Some go so far as to say that robot “emotions” may already have occurred—that current robots have not only displayed emotions, but in some ways have experienced them.

“We’re all machines,” says Rodney Brooks author of “Flesh and Machines,” and former director of M.I.T.’s Computer Science and Artificial Intelligence Laboratory, “Robots are made of different sorts of components than we are — we are made of biomaterials; they are silicon and steel — but in principle, even human emotions are mechanistic.” A robot’s level of a feeling like sadness could be set as a number in computer code, he said. But isn’t a human’s level of sadness basically a number, too, just a number of the amounts of various neurochemicals circulating in the brain? Why should a robot’s numbers be any less authentic than a human’s?

Tags: robotics, intelligence, life

One Singular Sensation

Mon, 30 Jun 2008 14:49:01 GMT

clipped by: wildcat
clipper's remarks: a worthwhile read

Clip Source: www.sciam.com

One Singular Sensation: Will We Upload Our Brains, and Other Questions Related to "The Coming Singularity"

Podcast Transcription

Different people believe different things but I am going to give you a sort of smorgasbord here. The elements of the singularity are: machines become super intelligent. This is kind of the seminal event. What I mean by super intelligent is, far smarter than human beings. So what happens then? Well they're smarter than us, so they kind of don't need us. There is a self-replicating aspect, in other words, okay? They're very [much] smarter than human beings, these machines, and they're going to start reproducing themselves and they won't need us at that point.

A computer generation could be a week; a computer generation could be two or three days. The point is that you can go from generation to generation and every generation being much smarter than the one before it in a few days

Tags: singularity

NASA's Climate TimeMachine

Mon, 30 Jun 2008 11:39:50 GMT

clipped by: wildcat

Clip Source: www.dailygalaxy.com

NASA's Climate TimeMachine visualization shows the changes in annual Arctic Sea ice, sea surface height, carbon dioxide emissions, and global surface temperatures.

Arctic sea ice minimum is shown from 1979 to 2007. At the end of each summer, the sea ice cover reaches its minimum extent, leaving what is called the perennial ice cover. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979.

Sea surface height variations are shown, observed by the TOPEX/Poseidon and Jason-1 missions from January 1996 through December 2005. These variations between what we see and what is normal for different times of year and regions are called anomalies, or residuals.

Annual carbon dioxide emissions produced by the top 12 nations or regions from 1980-2004 is graphically illustrated. Units are given in thousand metric tons of carbon dioxide emitted from fossil fuel consumption.

NASA Climate TimeMachine

Tags: nasa, climate, timemachine

Your brain lies to you

Mon, 30 Jun 2008 02:28:19 GMT

clipped by: wildcat
clipper's remarks: This phenomenon, known as source amnesia, can also lead people to forget whether a statement is true. Even when a lie is presented with a disclaimer, people often later remember it as true.

Clip Source: www.iht.com

False beliefs are everywhere. Eighteen percent of Americans think the sun revolves around the earth, one poll has found. Thus it seems slightly less egregious that, according to another poll, 10 percent of us think that Senator Barack Obama, a Christian, is instead a Muslim. The Obama campaign has created a Web site to dispel misinformation. But this effort may be more difficult than it seems, thanks to the quirky way in which our brains store memories - and mislead us along the way.

The brain does not simply gather and stockpile information as a computer's hard drive does. Facts are stored first in the hippocampus, a structure deep in the brain about the size and shape of a fat man's curled pinkie finger. But the information does not rest there. Every time we recall it, our brain writes it down again, and during this re-storage, it is also reprocessed. In time, the fact is gradually transferred to the cerebral cortex and is separated from the context in which it was originally learned

Tags: brain, misleading, false beliefs

IBM-Swiss scientists to create artifical human brain by 2015

Sun, 29 Jun 2008 16:13:30 GMT

clipped by: wildcat

Clip Source: memebox.com

Director Henry Markram of the IBM-Swiss Blue Brain project believes that his team of up to 125 researchers is on target to create the world’s first artificial brain by as early as 2015.

In June 2005, IBM and the Swiss Brain Mind Institute announced a plan to create a digital 3D replica of the human brain. Named after the IBM Blue Gene supercomputer, the Blue Brain Project has started modeling, in precise detail, the cellular infrastructure of the cerebral neocortex.

Although Markram expects his creation may eventually learn to speak, he is not holding his breath waiting for consciousness to rise from its brain. What he is after is something far more useful than a talking machine. By creating a better understanding of how human brains perform, doctors will learn more about why our brains fail.

Disorders such as depression, schizophrenia, and dementia are the price we pay for having complicated brains.

Tags: artificial, brain, human, health, medicine, computing

What’s Really Up With North Pole Sea Ice?

Sun, 29 Jun 2008 10:52:07 GMT

clipped by: wildcat

Clip Source: dotearth.blogs.nytimes.com

The Drudgeosphere was all pumped up today about the “shock claim” in the (UK) Independent that the sea ice that normally persists year-round at the North Pole (I stood on it in March, 2003) will be replaced by open water later this summer.

Given the unpredictable short-term dynamics up there, which make the ice subject to vagaries of Siberian winds and a mix of currents, a lot of polar ice experts tell me it’s pretty much impossible to make such a prediction with high confidence. In fact, the Independent’s story — the opening sentences and headline at least — go way beyond what Mark Serreze of the National Snow and Ice Data Center tells the reporter. As early as May, ice experts were putting good odds on having open water at the North Pole. [UPDATE 11 p.m.: Gavin Schmidt of Realclimate.org muses on why the media hyperventilate over polar non-news developments.]

Tags: north pole, ice, melt, climate change

The Fight to End Aging Gains Legitimacy, Funding

Fri, 27 Jun 2008 15:58:41 GMT

clipped by: wildcat
clipper's remarks: This weekend, his organization, The Methuselah Foundation, is sponsoring its first U.S. conference on the emerging interdisciplinary field that de Grey has helped kick start. (Its first day, Friday, will be free and open to the public.) The conference, Aging: The Disease - The Cure - The Implications, held at UCLA, is an indication of how far de Grey has come in mainstreaming his ideas.

Clip Source: www.wired.com

Aubrey de Grey's years of perseverance have literally started to pay off, funding his research to fight aging.
Courtesy of Bruce Klein

Gandhi once said, describing his critics, "First they ignore you, then they laugh at you, then they fight you, then you win."

After declaring, essentially out of nowhere, that he had a program to end the disease of aging, renegade biogerontologist Aubrey de Grey knows how the first three steps of Gandhi's progression feel. Now he's focused on the fourth.

"I've been at Gandhi stage three for maybe a couple of years," de Grey said. "If you're trying to make waves, certainly in science, there's a lot of people who are going to have insufficient vision to bother to understand what you're trying to say."

Tags: aubrey de grey, aging

Project to reveal choc's DNA code

Thu, 26 Jun 2008 10:27:27 GMT

clipped by: wildcat

Clip Source: news.bbc.co.uk

The chocolate company Mars has announced that it is to decode the genetic structure of the cacao tree.

The research project, which is to be done in collaboration with the US Department of Agriculture and IT firm IBM, aims to improve cocoa production.

Scientists hope the Chocolate Genome Project can assist breeding programmes.

Understanding the tree's DNA could make crop production more resistant to pests, diseases, and water shortages that may come from a warming climate.

Howard-Yana Shapiro, Mars' global director of plant science, said African farmers stood to benefit the most as they accounted for nearly two-thirds of world cocoa production.

The research would "ultimately improve cacao trees, yield higher quality cocoa and increase income for farmers", he told BBC News.

Dr Shapiro would not be drawn on whether the research might lead to genetically modified chocolate.

Tags: chocolate, dna

The End of Theory: The Data Deluge Makes the Scientific Method Obsolete

Wed, 25 Jun 2008 12:12:11 GMT

clipped by: wildcat
clipper's remarks: "Speaking at the O'Reilly Emerging Technology Conference this past March, Peter Norvig, Google's research director, offered an update to George Box's maxim: "All models are wrong, and increasingly you can succeed without them."

Clip Source: www.wired.com

"All models are wrong, but some are useful."

So proclaimed statistician George Box 30 years ago, and he was right. But what choice did we have? Only models, from cosmological equations to theories of human behavior, seemed to be able to consistently, if imperfectly, explain the world around us. Until now. Today companies like Google, which have grown up in an era of massively abundant data, don't have to settle for wrong models. Indeed, they don't have to settle for models at all.

Sixty years ago, digital computers made information readable. Twenty years ago, the Internet made it reachable. Ten years ago, the first search engine crawlers made it a single database. Now Google and like-minded companies are sifting through the most measured age in history, treating this massive corpus as a laboratory of the human condition. They are the children of the Petabyte Age.

Tags: theory, data, scientific model, computation cloud, google

According to Popper

Tue, 24 Jun 2008 10:16:45 GMT

clipped by: wildcat
clipper's remarks: According to Popper, a science without limits or imperfections or fixable flaws isn't science: it's metaphysics. In this sense, the end goal of science - the construction of a perfect mirror to reality - isn't just unrealistic: it's also unscientific.

Clip Source: scienceblogs.com

It's a truism that the favorite philosopher of every scientist is Karl Popper. (In my own experience, this truism is mostly true.) Popper, or so the story goes, stood up for empirical fact when the post-modernists were descending into Deleuze and Derrida and difference. His popularity among experimentalists is also a side-effect of simplicity, as his fundamental idea is easy enough for just about anyone to understand: Popper famously pointed out that science never proves things true, it merely proves things false (this is the falsifiability doctrine). In other words, scientists proceed in stuttering steps, advancing by saying what theories are wrong. The truth is just what (temporarily) survives.

it's easy to not notice how radical an idea this is. But look closer. For Popper, all discovery is really just criticism

Scientific truth is true precisely because it is open to change, willing to reverse itself and admit its errors

Tags: popper, science, philosophy