Dust devil and the details: Spinning up a storm on Mars

Science Daily - Thu, 18/12/2014 - 8:44pm
Spinning up a dust devil in the thin air of Mars requires a stronger updraft than is needed to create a similar vortex on Earth, researchers show. “To start a dust devil on Mars you need convection, a strong updraft,” said Bryce Williams, an atmospheric science graduate student at UAH. “We looked at the ratio between convection and surface turbulence to find the sweet spot where there is enough updraft to overcome the low level wind and turbulence. And on Mars, where we think the process that creates a vortex is more easily disrupted by frictional dissipation – turbulence and wind at the surface – you need twice as much convective updraft as you do on Earth.” Williams and UAH’s Dr. Udaysankar Nair looked for the dust devil sweet spot by combining dat
Categories: Science

Daring Philae Comet Landing Named Top Breakthrough of 2014

Space.com - Thu, 18/12/2014 - 8:33pm
The first-ever soft landing of a robotic probe the surface of a comet has just been named the top scientific breakthrough of 2014 by the journal Science.
Categories: Science

Ask Slashdot: What Can I Really Do With a Smart Watch?

Slashdot - Thu, 18/12/2014 - 8:10pm
kwelch007 writes I commonly work in a clean-room (CR.) As such, I commonly need access to my smart-phone for various reasons while inside the CR...but, I commonly keep it in my front pocket INSIDE my clean-suit. Therefore, to get my phone out of my pocket, I have to leave the room, get my phone out of my pocket, and because I have a one track mind, commonly leave it sitting on a table or something in the CR, so I then have to either have someone bring it to me, or suit back up and go get it myself...a real pain. I have been looking in to getting a 'Smart Watch' (I'm preferential to Android, but I know Apple has similar smart-watches.) I would use a smart-watch as a convenient, easy to transport and access method to access basic communications (email alerts, text, weather maps, etc.) The problem I'm finding while researching these devices is, I'm not finding many apps. Sure, they can look like a nice digital watch, but I can spend $10 for that...not the several hundred or whatever to buy a smart-watch. What are some apps I can get? (don't care about platform, don't care if they're free) I just want to know what's the best out there, and what it can do? I couldn't care less about it being a watch...we have these things called clocks all over the place. I need various sorts of data access. I don't care if it has to pair with my smart-phone using Bluetooth or whatever, and it won't have to be a 100% solution...it would be more of a convenience that is worth the several hundred dollars to me. My phone will never be more than 5 feet away, it's just inconvenient to physically access it. Further, I am also a developer...what is the best platform to develop for these wearable devices on, and why? Maybe I could make my own apps? Is it worth waiting for the next generation of smart-watches?

Read more of this story at Slashdot.








Categories: Science

Gadget Lab Podcast: We Say Goodbye to a Good Friend and Traitor

Wired News - Thu, 18/12/2014 - 8:03pm

It’s our last show of 2014, and also Mat Honan’s last show as co-host. He’s starting a new job at Buzzfeed, so what better way to see him off than with a Buzzfeed-style quiz?

The post Gadget Lab Podcast: We Say Goodbye to a Good Friend and Traitor appeared first on WIRED.








Categories: Science

Australia Moves Toward New Restrictions On Technology Export and Publication

Slashdot - Thu, 18/12/2014 - 7:31pm
An anonymous reader writes Australia is starting a public consultation process for new legislation that further restricts the publication and export of technology on national security grounds. The public consultation starts now (a few days before Christmas) and it is due by Jan 30th while a lot of Australians are on holidays. I don't have the legal expertise to dissect the proposed legislation, but I'd like some more public scrutiny on it. I find particularly disturbing the phrase "The Bill includes defences that reverse the onus of proof which limit the right to be presumed innocent until proven guilty" contained in this document, also available on the consultation web site.

Read more of this story at Slashdot.








Categories: Science

Australia Moves Toward New Restrictions On Technology Export and Publication

Slashdot - Thu, 18/12/2014 - 7:31pm
An anonymous reader writes Australia is starting a public consultation process for new legislation that further restricts the publication and export of technology on national security grounds. The public consultation starts now (a few days before Christmas) and it is due by Jan 30th while a lot of Australians are on holidays. I don't have the legal expertise to dissect the proposed legislation, but I'd like some more public scrutiny on it. I find particularly disturbing the phrase "The Bill includes defences that reverse the onus of proof which limit the right to be presumed innocent until proven guilty" contained in this document, also available on the consultation web site.

Read more of this story at Slashdot.








Categories: Science

Australia Moves Toward New Restrictions On Technology Export and Publication

Slashdot - Thu, 18/12/2014 - 7:31pm
An anonymous reader writes Australia is starting a public consultation process for new legislation that further restricts the publication and export of technology on national security grounds. The public consultation starts now (a few days before Christmas) and it is due by Jan 30th while a lot of Australians are on holidays. I don't have the legal expertise to dissect the proposed legislation, but I'd like some more public scrutiny on it. I find particularly disturbing the phrase "The Bill includes defences that reverse the onus of proof which limit the right to be presumed innocent until proven guilty" contained in this document, also available on the consultation web site.

Read more of this story at Slashdot.








Categories: Science

Australia Moves Toward New Restrictions On Technology Export and Publication

Slashdot - Thu, 18/12/2014 - 7:31pm
An anonymous reader writes Australia is starting a public consultation process for new legislation that further restricts the publication and export of technology on national security grounds. The public consultation starts now (a few days before Christmas) and it is due by Jan 30th while a lot of Australians are on holidays. I don't have the legal expertise to dissect the proposed legislation, but I'd like some more public scrutiny on it. I find particularly disturbing the phrase "The Bill includes defences that reverse the onus of proof which limit the right to be presumed innocent until proven guilty" contained in this document, also available on the consultation web site.

Read more of this story at Slashdot.








Categories: Science

Australia Moves Toward New Restrictions On Technology Export and Publication

Slashdot - Thu, 18/12/2014 - 7:31pm
An anonymous reader writes Australia is starting a public consultation process for new legislation that further restricts the publication and export of technology on national security grounds. The public consultation starts now (a few days before Christmas) and it is due by Jan 30th while a lot of Australians are on holidays. I don't have the legal expertise to dissect the proposed legislation, but I'd like some more public scrutiny on it. I find particularly disturbing the phrase "The Bill includes defences that reverse the onus of proof which limit the right to be presumed innocent until proven guilty" contained in this document, also available on the consultation web site.

Read more of this story at Slashdot.








Categories: Science

Australia Moves Toward New Restrictions On Technology Export and Publication

Slashdot - Thu, 18/12/2014 - 7:31pm
An anonymous reader writes Australia is starting a public consultation process for new legislation that further restricts the publication and export of technology on national security grounds. The public consultation starts now (a few days before Christmas) and it is due by Jan 30th while a lot of Australians are on holidays. I don't have the legal expertise to dissect the proposed legislation, but I'd like some more public scrutiny on it. I find particularly disturbing the phrase "The Bill includes defences that reverse the onus of proof which limit the right to be presumed innocent until proven guilty" contained in this document, also available on the consultation web site.

Read more of this story at Slashdot.








Categories: Science

Australia Moves Toward New Restrictions On Technology Export and Publication

Slashdot - Thu, 18/12/2014 - 7:31pm
An anonymous reader writes Australia is starting a public consultation process for new legislation that further restricts the publication and export of technology on national security grounds. The public consultation starts now (a few days before Christmas) and it is due by Jan 30th while a lot of Australians are on holidays. I don't have the legal expertise to dissect the proposed legislation, but I'd like some more public scrutiny on it. I find particularly disturbing the phrase "The Bill includes defences that reverse the onus of proof which limit the right to be presumed innocent until proven guilty" contained in this document, also available on the consultation web site.

Read more of this story at Slashdot.








Categories: Science

Australia Moves Toward New Restrictions On Technology Export and Publication

Slashdot - Thu, 18/12/2014 - 7:31pm
An anonymous reader writes Australia is starting a public consultation process for new legislation that further restricts the publication and export of technology on national security grounds. The public consultation starts now (a few days before Christmas) and it is due by Jan 30th while a lot of Australians are on holidays. I don't have the legal expertise to dissect the proposed legislation, but I'd like some more public scrutiny on it. I find particularly disturbing the phrase "The Bill includes defences that reverse the onus of proof which limit the right to be presumed innocent until proven guilty" contained in this document, also available on the consultation web site.

Read more of this story at Slashdot.








Categories: Science

Australia Moves Toward New Restrictions On Technology Export and Publication

Slashdot - Thu, 18/12/2014 - 7:31pm
An anonymous reader writes Australia is starting a public consultation process for new legislation that further restricts the publication and export of technology on national security grounds. The public consultation starts now (a few days before Christmas) and it is due by Jan 30th while a lot of Australians are on holidays. I don't have the legal expertise to dissect the proposed legislation, but I'd like some more public scrutiny on it. I find particularly disturbing the phrase "The Bill includes defences that reverse the onus of proof which limit the right to be presumed innocent until proven guilty" contained in this document, also available on the consultation web site.

Read more of this story at Slashdot.








Categories: Science

Computational clues into the structure of a promising energy conversion catalyst

Science Daily - Thu, 18/12/2014 - 7:11pm
Researchers at Princeton University have reported new insights into the structure of an active component of the nickel oxide catalyst, a promising catalyst for water splitting to produce hydrogen fuel.
Categories: Science

In one aspect of vision, computers catch up to primate brain

Science Daily - Thu, 18/12/2014 - 7:10pm
For decades, neuroscientists have been trying to design computer networks that can mimic visual skills such as recognizing objects, which the human brain does very accurately and quickly. Until now, no computer model has been able to match the primate brain at visual object recognition during a brief glance. Now neuroscientists have found that one of the latest generation of 'deep neural networks' matches the primate brain.
Categories: Science

Ibuprofen use leads to extended lifespan in several species, study shows

Science Daily - Thu, 18/12/2014 - 7:10pm
A common over-the-counter drug that tackles pain and fever may also hold keys to a longer, healthier life, according to a Texas A&M AgriLife Research scientist. Regular doses of ibuprofen extended the lifespan of multiple species.
Categories: Science

How llamas' unusual antibodies might help in the fight against HIV/AIDS

Science Daily - Thu, 18/12/2014 - 7:10pm
Most vaccines work by inducing an immune response characterized by neutralizing antibodies against the respective pathogen. An effective HIV vaccine has remained elusive so far, but researchers have continued to make progress, often employing innovative methods. A new study reports that a combination of antibodies from llamas can neutralize a wide range of circulating HIV viruses.
Categories: Science

Time management skills keep animals primed for survival

Science Daily - Thu, 18/12/2014 - 7:10pm
Many animals may have a previously under-appreciated ability to make up for lost time with more effort, according to new research.
Categories: Science

Origin of long-standing space mystery revealed: Origin of the 'theta aurora'

Science Daily - Thu, 18/12/2014 - 7:09pm
Scientists have solved a long-standing space mystery - the origin of the 'theta aurora'. Auroras are the most visible manifestation of the Sun's effect on Earth. They are seen as colorful displays in the night sky, known as the Northern or Southern Lights. They are caused by the solar wind, a stream of plasma - electrically charged atomic particles - carrying its own magnetic field, interacting with the earth's magnetic field. Normally, the main region for this impressive display is the 'auroral oval', which lies at around 65-70 degrees north or south of the equator, encircling the polar caps. However, auroras can occur at even higher latitudes. One type is known as a 'theta aurora' because seen from above it looks like the Greek letter theta - an oval with a line crossing through the center.
Categories: Science

Revealing the quantum geometry of the graphene lattice

Science Daily - Thu, 18/12/2014 - 7:09pm
Among the most revolutionary concepts of modern physics is that the laws of nature are inherently non-local. One striking manifestation of this non-locality was famously predicted by Aharonov and Bohm: a magnetic field confined to the interior of a solenoid can alter the behavior of electrons outside it, shifting the phase of their wave-like interference although they never directly encounter the magnetic field. Originally regarded as a mere curiosity, such "geometric phase shifts" are now known to have dramatic consequences for electron transport in solid-state materials, e.g., allowing unimpeded current flow along the edges of a material that is insulating in the bulk.
Categories: Science