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Bitcoin network speed 8 times faster than top 500 supercomputers combined

May 13, 2013

bitcoin

The mining speed of the bitcoin network on bitcoinwatch.com passed 1 exaFLOPS (1,000 petaFLOPS) this week — more than 8* times the combined speed of the Top 500 supercomputers, according to The Genesis Block.

(FLOPS stands for FLoating-point Operations Per Second, and is frequently used as a standard to measure computer speed.)

However, that calculation was based on 2011 supercomputer data and it’s not… read more

BigBrain: an ultra-high-resolution 3D roadmap of the human brain

June 21, 2013

BigBrain (credit: Montreal Neurological Institute and Forschungszentrum Jülich)

A landmark three-dimensional (3-D) digital reconstruction of a complete human brain, called the BigBrain, shows for the first time the brain anatomy in microscopic detail — at a spatial resolution of 20 microns, smaller than the size of one fine strand of hair — exceeding that of existing reference brains presently in the public domain.

The new tool is made freely available to the broader scientific community to advance… read more

Psychotherapy via Internet found as good as or better than face-to-face

July 31, 2013

(Credit: iStockphoto)

Online psychotherapy is just as efficient as conventional therapy, University of Zurich clinical researchers have found in a study of online psychotherapy vs. conventional face-to-face therapy.

And three months after the end of the therapy, patients given online treatment even displayed fewer symptoms.

Six therapists treated 62 patients, the majority of whom were suffering from moderate depression. The patients were divided into two equal groups… read more

Five potential habitable exoplanets now

Exoplanet Gliese 581g is the best candidate so far of a potential habitable exoplanet
July 25, 2012

Gliese 581g

New data suggests the exoplanet Gliese 581g is the best candidate so far of a potential habitable exoplanet. The nearby star Gliese 581 — located about 20 light years away from Earth in the constellation Libra — has four planets; the outermost planet, Gliese 581d, was already suspected habitable.

This will be the first evidence for any two potential habitable exoplanets that are orbiting the same star.

Based on… read more

US needs new deep-space Agency, Apollo astronaut says

December 11, 2012

harrison-schmitt-apollo17-astronaut-moonwalk

The U.S. should create a new agency dedicated to manned exploration of the moon, Mars and other destinations in deep space, says former Apollo astronaut Harrison Schmitt, Space.com reports.

Schmitt suggests the new agency be called the National Space Exploration Administration.

The new deep-space agency should “stay young, and develop a management structure that is not so hierarchical — that is actually a… read more

Is this Elon Musk’s secret design for a high-speed train?

July 16, 2013

Hyperloop2

Elon Musk has been hinting at an idea he calls the Hyperloop — a ground-based transportation technology that would get people from Los Angeles to San Francisco in under half an hour, for less than 1/10 the cost of California’s $69 billion plan.

On Monday, Musk tweeted that he will publish an “alpha design” for the Hyperloop by Aug. 12. As Slateread more

Bioethics Commission releases volume one response to the BRAIN Initiative

May 21, 2014

(Credit: Bioethics Commission)

The Presidential Commission for the Study of Bioethical Issues (Bioethics Commission) has released volume one of its two-part response to President Obama’s request related to the Brain Research through Advancing Innovative Neurotechnologies (BRAIN) Initiative, entitled Gray Matters: Integrative Approaches for Neuroscience, Ethics, and Society.

“Neuroscience has begun to make important breakthroughs, but given the complexity of the brain, we must better understand it in order to make desired… read more

Resveratrol counteracts effects of exercise in older men

July 24, 2013

resveratrol

Resveratrol — a natural antioxidant compound found in red grapes and other plants — counteracts many of the cardiovascular benefits of exercise in older men,  including reduced blood pressure and cholesterol, according to research conducted at The University of Copenhagen.

Lasse Gliemann, a PhD student who worked on the study at The University of Copenhagen, explains how they conducted the research, and the results they found:

“We… read more

Bell Labs invents lensless camera

June 4, 2013

Lensless camera (credit: Gang Huang, Hong Jiang, Kim Matthews, Paul Wilford)

Researchers at Bell Labs in New Jersey say they’ve used compressive sensing to build a camera that needs no lens and uses only a single sensing pixel to take photographs, MIT Technology Review reports.

What’s more, the images from this camera are never out of focus.

The invention could revolutionize optical, infrared and millimeter-wave imaging

This revolutionary lensless camera has a number of advantages over… read more

Disruptions: on the fast track to routine 3D printing

February 19, 2013

makerbot

Hod Lipson, an associate professor and the director of the Creative Machines Lab at Cornell, said “3D printing is worming its way into almost every industry, from entertainment, to food, to bio- and medical-applications,” The New York Times reports.

Dr. Lipson, the co-author of “Fabricated: The New World of 3D Printing,” said… read more

Groups concerned over arming of domestic drones

May 25, 2012

blog_armedrone

Chief Deputy Randy McDaniel of the Montgomery County Sheriff’s Office in Texas said his department is considering using rubber bullets and tear gas on its drone, CBS DC reports.

“Drone manufacturers are also considering offering police the option of arming these remote-controlled aircraft with (nonlethal for now) weapons like rubber bullets, Tasers, and tear gas,” the ACLU says on their website.

Catherine Crump, staff… read more

Could we build a 20-kilometer-high space tower?

September 12, 2012

(NASA MSFC, Artist Pat Rawling)

Science-fiction novelist Neal Stephenson imagines a 20-kilometer-high steel tower that reaches into the stratosphere.

From that height, planes could save fuel by docking at the tower rather than landing, and space missions could do the same by launching from it.

Stephenson is teaming up with a structural engineer, Keith Hjelmstad at Arizona State University (ASU), to work out how to actually build the tower, New Scientist reports.… read more

Civilization faces ‘perfect storm of ecological and social problems’

February 22, 2012

(credit: BP)

Celebrated scientists and development thinkers today warn that civilization is faced with a perfect storm of ecological and social problems driven by overpopulation, overconsumption, and environmentally malign technologies.

In the face of an “absolutely unprecedented emergency,” say the 18 past winners of the Blue Planet prize — the unofficial Nobel for the environment — society has “no choice but to take dramatic action to avert a collapse of civilisation. Either we… read more

2045: The Year Man Becomes Immortal

February 10, 2011

timecover

Time magazine just published a comprehensive cover story on the Singularity and Ray Kurzweil’s “radical vision for humanity’s immortal future.”

“Kurzweil’s interest in humanity’s cyborganic destiny began about 1980 largely as a practical matter. He needed ways to measure and track the pace of technological progress…(Kurzweil) has been publishing his thoughts about the future of human and machine-kind for 20 years, most recently in The Singularity Isread more

Teleporting information achieved by TU Delft

A key step toward a "quantum internet"
June 2, 2014

(Credit: TU Delft)

Teleporting people through space, as in Star Trek, is impossible by the laws of physics, but researchers at TU Delft‘s Kavli Institute of Nanoscience have succeeded in teleporting information.

Using quantum entanglement, they transferred the information contained in a quantum bit in a diamond to a quantum bit in another diamond three meters away, without the information having traveled through the intervening space.

The… read more

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