Grad Student Rigs Cheap Alternative To $1,000 Air Purifiers In Smoggy China

Slashdot - Thu, 31/07/2014 - 4:13pm
An anonymous reader writes "University of Virginia grad student Thomas Talhelm was living in Beijing on a Fulbright Scholarship during the winter of 2012-13, when air pollution was so bad scientists likened it to a nuclear winter. Those who could afford it were resorting to an expensive solution: air filters costing up to $1,000. Talhem built his own on the cheap, getting comparable particulate count results, and has started a company that both markets the product to middle class Chinese and shows others how to DIY."

Read more of this story at Slashdot.








Categories: Science

Grad Student Rigs Cheap Alternative To $1,000 Air Purifiers In Smoggy China

Slashdot - Thu, 31/07/2014 - 4:13pm
An anonymous reader writes "University of Virginia grad student Thomas Talhelm was living in Beijing on a Fulbright Scholarship during the winter of 2012-13, when air pollution was so bad scientists likened it to a nuclear winter. Those who could afford it were resorting to an expensive solution: air filters costing up to $1,000. Talhem built his own on the cheap, getting comparable particulate count results, and has started a company that both markets the product to middle class Chinese and shows others how to DIY."

Read more of this story at Slashdot.








Categories: Science

Grad Student Rigs Cheap Alternative To $1,000 Air Purifiers In Smoggy China

Slashdot - Thu, 31/07/2014 - 4:13pm
An anonymous reader writes "University of Virginia grad student Thomas Talhelm was living in Beijing on a Fulbright Scholarship during the winter of 2012-13, when air pollution was so bad scientists likened it to a nuclear winter. Those who could afford it were resorting to an expensive solution: air filters costing up to $1,000. Talhem built his own on the cheap, getting comparable particulate count results, and has started a company that both markets the product to middle class Chinese and shows others how to DIY."

Read more of this story at Slashdot.








Categories: Science

Grad Student Rigs Cheap Alternative To $1,000 Air Purifiers In Smoggy China

Slashdot - Thu, 31/07/2014 - 4:13pm
An anonymous reader writes "University of Virginia grad student Thomas Talhelm was living in Beijing on a Fulbright Scholarship during the winter of 2012-13, when air pollution was so bad scientists likened it to a nuclear winter. Those who could afford it were resorting to an expensive solution: air filters costing up to $1,000. Talhem built his own on the cheap, getting comparable particulate count results, and has started a company that both markets the product to middle class Chinese and shows others how to DIY."

Read more of this story at Slashdot.








Categories: Science

Grad Student Rigs Cheap Alternative To $1,000 Air Purifiers In Smoggy China

Slashdot - Thu, 31/07/2014 - 4:13pm
An anonymous reader writes "University of Virginia grad student Thomas Talhelm was living in Beijing on a Fulbright Scholarship during the winter of 2012-13, when air pollution was so bad scientists likened it to a nuclear winter. Those who could afford it were resorting to an expensive solution: air filters costing up to $1,000. Talhem built his own on the cheap, getting comparable particulate count results, and has started a company that both markets the product to middle class Chinese and shows others how to DIY."

Read more of this story at Slashdot.








Categories: Science

Grad Student Rigs Cheap Alternative To $1,000 Air Purifiers In Smoggy China

Slashdot - Thu, 31/07/2014 - 4:13pm
An anonymous reader writes "University of Virginia grad student Thomas Talhelm was living in Beijing on a Fulbright Scholarship during the winter of 2012-13, when air pollution was so bad scientists likened it to a nuclear winter. Those who could afford it were resorting to an expensive solution: air filters costing up to $1,000. Talhem built his own on the cheap, getting comparable particulate count results, and has started a company that both markets the product to middle class Chinese and shows others how to DIY."

Read more of this story at Slashdot.








Categories: Science

Grad Student Rigs Cheap Alternative To $1,000 Air Purifiers In Smoggy China

Slashdot - Thu, 31/07/2014 - 4:13pm
An anonymous reader writes "University of Virginia grad student Thomas Talhelm was living in Beijing on a Fulbright Scholarship during the winter of 2012-13, when air pollution was so bad scientists likened it to a nuclear winter. Those who could afford it were resorting to an expensive solution: air filters costing up to $1,000. Talhem built his own on the cheap, getting comparable particulate count results, and has started a company that both markets the product to middle class Chinese and shows others how to DIY."

Read more of this story at Slashdot.








Categories: Science

Grad Student Rigs Cheap Alternative To $1,000 Air Purifiers In Smoggy China

Slashdot - Thu, 31/07/2014 - 4:13pm
An anonymous reader writes "University of Virginia grad student Thomas Talhelm was living in Beijing on a Fulbright Scholarship during the winter of 2012-13, when air pollution was so bad scientists likened it to a nuclear winter. Those who could afford it were resorting to an expensive solution: air filters costing up to $1,000. Talhem built his own on the cheap, getting comparable particulate count results, and has started a company that both markets the product to middle class Chinese and shows others how to DIY."

Read more of this story at Slashdot.








Categories: Science

White Dwarf + Red Giant = Thermonuclear Explosion | Animation

Space.com - Thu, 31/07/2014 - 3:59pm
The Fermi Gamma-Ray Space Telescope detected a flash-blast emanating from white dwarf star V407 Cyg as the stellar wind of its red giant companion impinges, like spraying lighter fluid at a raging fire.
Categories: Science

Aquanautics: Why Astronauts Train Underwater | Video

Space.com - Thu, 31/07/2014 - 3:56pm
NASA astronaut Mark Vande Hei explains how he trains for assignments in space during a long stay in the Aquarius underwater laboratory in the Florida Keys National Marine Sanctuary.
Categories: Science

NASA's JPL Develops Multi-Metal 3D Printing Process

Slashdot - Thu, 31/07/2014 - 3:33pm
yyzmcleod (1534129) writes The technology to 3D print a single part from multiple materials has been around for years, but only for polymer-based additive manufacturing processes. For metals, jobs are typically confined to a single powdered base metal or alloy per object. However, researchers at NASA's Jet Propulsion Laboratory say they have developed a 3D printing technique that allows for print jobs to transition from one metal to another in a single object. From the article: In JPL’s technique, the build material’s composition is gradually transitioned as the print progresses. For example, the powdered build material might contain 97 percent titanium alloy and 3 percent stainless steel at the beginning of the transition. Then, in 1 percent increments between layers, the gradient progresses to 97 percent stainless steel and 3 percent Ti alloy by some defined point in the overall 3D printing process.

Read more of this story at Slashdot.








Categories: Science

Lead in teeth can tell a body's tale, study finds

Science Daily - Thu, 31/07/2014 - 3:09pm
Your teeth can tell stories about you, and not just that you always forget to floss. The discovery could help police solve cold cases, an investigator has said. For instance, if an unidentified decomposed body is found, testing the lead in the teeth could immediately help focus the investigation on a certain geographic area. That way, law enforcement can avoid wasting resources checking for missing persons in the wrong places.
Categories: Science

Hubble shows farthest lensing galaxy yields clues to early universe

Science Daily - Thu, 31/07/2014 - 3:09pm
Astronomers have unexpectedly discovered the most distant galaxy that acts as a cosmic magnifying glass. Seen in a new image as it looked 9.6 billion years ago, this monster elliptical galaxy breaks the previous record holder by 200 million years.
Categories: Science

Family Spots Yowie Hiding Behind Logpile

Cryptomundo - Thu, 31/07/2014 - 2:55pm
A family heading to their Weekend Farmhouse at Woollamia, see a creature the witness describes as looking similar to "Chewbacca from Star Wars" hiding behind a log pile near the entrance of the property.
Categories: Fortean

"BadUSB" Exploit Makes Devices Turn "Evil"

Slashdot - Thu, 31/07/2014 - 2:52pm
An anonymous reader writes with s snippet from Ars Technica that should make you (even more) skeptical about plugging in random USB drives, or allowing to persons unknown physical access to you computer's USB ports : When creators of the state-sponsored Stuxnet worm used a USB stick to infect air-gapped computers inside Iran's heavily fortified Natanz nuclear facility, trust in the ubiquitous storage medium suffered a devastating blow. Now, white-hat hackers have devised a feat even more seminal—an exploit that transforms keyboards, Web cams, and other types of USB-connected devices into highly programmable attack platforms that can't be detected by today's defenses. Dubbed BadUSB, the hack reprograms embedded firmware to give USB devices new, covert capabilities. In a demonstration scheduled at next week's Black Hat security conference in Las Vegas, a USB drive, for instance, will take on the ability to act as a keyboard that surreptitiously types malicious commands into attached computers. A different drive will similarly be reprogrammed to act as a network card that causes connected computers to connect to malicious sites impersonating Google, Facebook or other trusted destinations. The presenters will demonstrate similar hacks that work against Android phones when attached to targeted computers. They say their technique will work on Web cams, keyboards, and most other types of USB-enabled devices.

Read more of this story at Slashdot.








Categories: Science

Pervasive implicit hierarchies for race, religion, age revealed by study

Science Daily - Thu, 31/07/2014 - 2:25pm
As much as social equality is advocated in the United States, a new study suggests that besides evaluating their own race and religion most favorably, people share implicit hierarchies for racial, religious, and age groups that may be different from their conscious, explicit attitudes and values.
Categories: Science

Effect of loud noises on brain revealed in study

Science Daily - Thu, 31/07/2014 - 2:25pm
Prolonged exposure to loud noise alters how the brain processes speech, potentially increasing the difficulty in distinguishing speech sounds, according to neuroscientists. Exposure to intensely loud sounds leads to permanent damage of the hair cells, which act as sound receivers in the ear. Once damaged, the hair cells do not grow back, leading to noise-induced hearing loss.
Categories: Science

Monoamine oxidase A: Biomarker for postpartum depression

Science Daily - Thu, 31/07/2014 - 2:25pm
Postpartum mood swings are correlated with high monoamine oxidase A binding, a study shows. For most women, the birth of their baby is one of the most strenuous but also happiest days in their lives. The vast majority of women experience a temporary drop in mood for a few days after birth. These symptoms of "baby blues" are not an illness; however, in some cases they can represent early signs of an imminent episode of depression: in 13 percent of mothers, the emotional turmoil experienced after childbirth leads to the development of a full-blown postpartum depression.
Categories: Science

Fossils could be discovered on the moon: Signs of ancient life may be littered across the moon

Science Daily - Thu, 31/07/2014 - 2:10pm
Physicists have tested what would happen if a piece of rock containing microscopic fossils from Earth was launched into space and hit the surface of the moon. The team turned fossil-filled rock into powder which was mixed with water and frozen to replicate a meteoroid.
Categories: Science

Unesco Probing Star Wars Filming In Ireland

Slashdot - Thu, 31/07/2014 - 2:10pm
First time accepted submitter wijnands (874114) writes Star Wars crews have started filming on the small Irish Island of Skellig Michael. This island, listed as a Unesco world heritage site, features the remains of a 6th century monastery as well as breeding populations of puffins , manx shearwaters, storm petrels, guillemots and kittiwakes. Currently the Irish navy has deployed one vessel to maintain a 2 mile exclusion zone around the island. Unesco is now concerned about what is going on the island, which is only visited 13 times a year by tourist groups, and has asked the Irish government for an explanation.

Read more of this story at Slashdot.








Categories: Science