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Atomtronic transistor and diode could advance quantum computing

7 hours ago | 4.8 / 5 (8) | 2

(PhysOrg.com) -- What if atoms could be used to perform the functions currently the province of electronic devices? The goal of atomtronics is to do just that by creating analogues to the common items found in electronic ...

Puzzled Physicists Solve Decade-Long Discrepancies

Physics / Condensed Matter

6 hours ago | 4.2 / 5 (11) | 5

(PhysOrg.com) -- A team led by physicists at the Science and Technology Facilities Council (STFC) and Brookhaven National Laboratory (BNL) have resolved a decade-long puzzle that is set to have huge implications ...

FCC launches probe of Google Voice service

Technology / Internet

3 hours ago | not rated yet | 0

(AP) -- Federal regulators will look into complaints by AT&T Inc. that Google Inc.'s free messaging and calling service, Google Voice, blocks calls to rural communities where local phone companies charge ...

Readers' Choice Story: October 8

Scientists discover quantum fingerprints of chaos
Key new ingredient in climate model refines global predictions
Space & Earth / Earth Sciences
3 hours ago | 3 / 5 (3) | 8
Researchers pave the way for effective liver treatments
Medicine & Health / Research
3 hours ago | not rated yet | 0
Hyper-SAGE boosts remote MRI sensitivity
Chemistry / Materials Science
3 hours ago | not rated yet | 0
When Being a Cuckold Makes Evolutionary Sense
Biology / Plants & Animals
4 hours ago | 4.3 / 5 (3) | 0

Atomtronic transistor and diode could advance quantum computing, 7 hours ago | 4.8 / 5 (8) | 2
Physicists Demonstrate Three-Color Entanglement, Oct 07, 2009 | 4.1 / 5 (19) | 3
Scientists Use Inkjet Printer to Manipulate Genes in New Ways, Oct 05, 2009 | 4.8 / 5 (17) | 0
Physicists Investigate Unusual Four-Qubit Entanglement, Sep 30, 2009 | 4.6 / 5 (18) | 5
Physicists Explain How Human Eyes Can Detect Quantum Effects, Sep 29, 2009 | 4.2 / 5 (45) | 19

more news »

Scans show learning 'sculpts' the brain's connections

Medicine & Health / Neuroscience

7 hours ago | 5 / 5 (4) | 0

Spontaneous brain activity formerly thought to be "white noise" measurably changes after a person learns a new task, researchers at Washington University School of Medicine in St. Louis and the University of Chieti, Italy, ...

Large Hadron Collider could test hyperdrive propulsion

Physics / General Physics

10 hours ago | 4.5 / 5 (11) | 3

(PhysOrg.com) -- The world's most powerful particle accelerator, the Large Hadron Collider (LHC), could be used to test the principles behind hyperdrive, a possible future form of spacecraft propulsion that could drive spacecraft ...

Quantum computing may actually be useful, after all

Physics / Quantum Physics

12 hours ago | 4.9 / 5 (15) | 1

(PhysOrg.com) -- In recent years, quantum computers have lost some of their luster. In the 1990s, it seemed that they might be able to solve a class of difficult but common problems — the so-called NP-complete ...

NASA to moon: Get ready because here we come (AP)

NASA probes hit moon twice; few pictures yet (Update)

Space & Earth / Space Exploration

8 hours ago | 4.3 / 5 (6) | 9

Take that, moon! NASA smacked two spacecraft into the lunar south pole Friday morning in a search for hidden ice. Instruments confirm that a large empty rocket hull barreled into the moon at 7:31 a.m., followed ...

Pigs learn to understand mirrors

Biology / Plants & Animals

8 hours ago | 3.6 / 5 (5) | 2

(PhysOrg.com) -- A study of domesticated pigs has found that with just a little experimentation they can find food based only on a reflection in a mirror.

Receptor activated exclusively by glutamate discovered on tongue

Medicine & Health / Research

8 hours ago | 4 / 5 (5) | 0

One hundred years ago, Kikunae Ikeda discovered the flavour-giving properties of glutamate, a non essential amino acid traditionally used to enhance the taste of many fermented or ripe foods, such as ripe ...

Developing enzymes to clean up pollution by explosives

Chemistry / Biochemistry

7 hours ago | 5 / 5 (1) | 0

Scientists at the University of York have uncovered the structure of an unusual enzyme which can be used to reverse the contamination of land by explosives.

Cisco has launched new software that shines light on potentially troublesome websites

Cisco shines light on dark corners of the Web

Technology / Software

12 hours ago | 2.6 / 5 (5) | 1

Cisco launched software that shines light on potentially troublesome websites hidden in what the US computer security firm dubbed the "Dark Web."

Inside the First Bird, Surprising Signs of a Dinosaur

Other Sciences / Archaeology & Fossils

22 hours ago | 4.2 / 5 (6) | 0

(PhysOrg.com) -- The raptor-like Archaeopteryx has long been viewed as the archetypal first bird, but new research reveals that it was actually a lot less “bird-like” than scientists had believed.

Lava flows in Daedalia Planum

Space & Earth / Space Exploration

12 hours ago | 3.5 / 5 (2) | 0

(PhysOrg.com) -- Mars Express imaged Daedalia Planum, a sparsely cratered, untextured plain on the Red Planet featuring solidified lava flows of varying ages.

Squeezing More Crop Out of Each Drop of Water

Biology / Other

11 hours ago | 3.7 / 5 (3) | 0

(PhysOrg.com) -- Studies in China and Colorado by Agricultural Research Service (ARS) scientists and cooperators have revealed some interesting tactics on how to irrigate with limited water, based on a crop’s ...

Upgrade to Windows 7? It all depends...

Technology / Software

22 hours ago | 2.2 / 5 (10) | 3

With Windows 7 scheduled for release Oct. 22, the question many readers will be asking is, "Should I upgrade?" The answer depends on your circumstances.

LRO Sees Apollo 14's Rocket Booster Impact Site

Space & Earth / Space Exploration

23 hours ago | 4.8 / 5 (5) | 1

(PhysOrg.com) -- A distinctive crater about 35 meters (115 feet) in diameter was formed when the Apollo 14 Saturn IVB (upper stage) was intentionally impacted into the moon. The energy of the impact created ...

Liver cells grown from patients' skin cells

Medicine & Health / Research

22 hours ago | not rated yet | 0

Scientists at The Medical College of Wisconsin in Milwaukee have successfully produced liver cells from patients' skin cells opening the possibility of treating a wide range of diseases that affect liver function. ...

Bug splatter on your car's windshield is a treasure trove of genomic biodiversity

Biology / Biotechnology

23 hours ago | not rated yet | 1

If you have ever taken a long road trip, the windshield of your car will inevitably be splattered with bugs by the time you arrive at your destination. Could the DNA left behind be used to estimate the diversity of insects ...

Last time carbon dioxide levels were this high: 15 million years ago, scientists report

Space & Earth / Earth Sciences

Oct 08, 2009 | 3.4 / 5 (39) | 28

You would have to go back at least 15 million years to find carbon dioxide levels on Earth as high as they are today, a UCLA scientist and colleagues report Oct. 8 in the online edition of the journal Science.

Physicists Measure Elusive 'Persistent Current' That Flows Forever

Physics / General Physics

Oct 08, 2009 | 4.9 / 5 (36) | 9

(PhysOrg.com) -- Physicists at Yale University have made the first definitive measurements of "persistent current," a small but perpetual electric current that flows naturally through tiny rings of metal wire ...

Plasma Rocket Could Travel to Mars in 39 Days

Space & Earth / Space Exploration

Oct 06, 2009 | 4.9 / 5 (93) | 55

(PhysOrg.com) -- Last Wednesday, the Ad Astra Rocket Company tested what is currently the most powerful plasma rocket in the world. As the Webster, Texas, company announced, the VASIMR VX-200 engine ran at ...

Invisible hand in invisible matter

Space & Earth / Astronomy

Oct 06, 2009 | 4.7 / 5 (31) | 23

(PhysOrg.com) -- An international team of astronomers have found an unexpected link between mysterious 'dark matter' and the visible stars and gas in galaxies that could revolutionise our current understanding ...

Unnatural selection: Birth control pills may alter choice of partners

Biology / Evolution

Oct 07, 2009 | 4 / 5 (11) | 18

There is no doubt that modern contraception has enabled women to have unprecedented control over their own fertility. However, is it possible that the use of oral contraceptives is interfering with a woman's ability to choose, ...

Color-changing roof tiles absorb heat in winter, reflect it in summer

Technology / Engineering

Oct 08, 2009 | 4.6 / 5 (17) | 6

(PhysOrg.com) -- Anyone who has ever stepped barefoot onto blacktop pavement on a hot sunny day knows the phenomenon very well: Black surfaces absorb the sun's heat very efficiently, producing a toe-scorching ...

A road of no return: Team implements the first '1-way roads' for light

Physics / Optics & Photonics

Oct 08, 2009 | 4.7 / 5 (19) | 2

Light readily bounces off obstacles in its path. Some of these reflections are captured by our eyes, thus participating in the visual perception of the objects around us. In contrast to this usual behavior ...

The Fall of the Maya: 'They Did it to Themselves'

Other Sciences / Archaeology & Fossils

Oct 07, 2009 | 4.7 / 5 (39) | 9

For 1200 years, the Maya dominated Central America. At their peak around 900 A.D., Maya cities teemed with more than 2,000 people per square mile -- comparable to modern Los Angeles County. Even in rural areas ...