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Three Florida students burned in flame test demo

Via the Tallahassee Democrat, an incident from last week: A chemistry experiment gone wrong injured three Lincoln High School students Friday morning. Leon County Emergency Medical Services responded to the call, along with the Tallahassee Fire Department and the Sheriff’s Office. Two students were admitted to Tallahassee Memorial Hospital with burns suffered during the incident, and another student was released to parental care. Both hospitalized students are in stable condition, confirme...

 
[Photosynthesis] Photosystem I enters into the spotlight

Plants rely on large complexes of proteins, chlorophyll, and other cofactors to turn light into chemical energy. Qin et al. present the crystal structures of photosystem I – [Read More]...

 
[Physics] Cooling a semiconductor with polaritons

Shining light onto a solid to cool it may seem counterintuitive, because the light will temporarily increase the solid's energy. To go back to its low-energy state, the solid may then – [Read More]...

 
Physicists precisely measure interaction between atoms and carbon surfaces

Physicists have conducted the most precise and controlled measurements yet of the interaction between the atoms and molecules that comprise air and the type of carbon surface used in battery electrodes and air filters -- key information for improving those technologies....

 
Jet Stream Steers Atlantic Currents

The jet stream off the East Coast of the United States controls an important climate pattern in the Atlantic Ocean, a new study finds. The jet stream's swooping path over the Atlantic Ocean is steered by a fluctuating pressure system called the North Atlantic Oscillation (NAO). A positive NAO aims the jet stream toward Ireland, while a negative NAO sends the winds southward, in a pattern similar to the polar vortex of recent winters....

 
It's Crater-palooza on Dwarf Planet Ceres (New Photo)

A new photo from NASA's Dawn spacecraft shows the battered surface of the dwarf planet Ceres in unprecedented detail. Smaller surface details like this are becoming visible with increasing clarity as Dawn spirals lower in its campaign to map Ceres," NASA officials wrote in an image description today (May 28). Vesta and Ceres are planetary building blocks left over from the solar system's early days, so Dawn's observations should help researchers better understand how rocky worlds like Earth and...

 
[Stress Responses] Identification of a memory drug target

ISRIB is a potent inhibitor of the integrated stress response (ISR), which involves the activation of eIF2α-specific kinases, phosphorylation of eIF2α, and consequent down-regulation o – [Read More]...

 
[Neurodevelopment] Coordinating neurons with blood vessels

The retina develops as interleaved layers of neurons and blood vessels. Usui et al. show that in mice, the development of blood vessel layers depends on signals from amacrine – [Read More]...

 
Updated hazard evaluation guidelines released

The American Chemical Society’s Committee on Chemical Safety has released an updated version of its “Identifying & Evaluating Hazards in Research Laboratories” guidelines. “This version of the document resolves comments received to date from the community of users,” says Kimberly Jeskie, director of Oak Ridge National Laboratory’s Integrated Operations Support Division and chair of the task force that wrote the report. “Readers should not expect to s...

 
Pluto Shows No Danger Signs Yet for Incoming NASA Probe

The New Horizons probe is cruising toward a highly anticipated flyby of Pluto on July 14, a historic encounter that will return the first-ever up-close looks at the dwarf planet. Earlier this month, mission team members began using New Horizons' long-range camera to hunt for undiscovered moons, rings and other features in the Pluto system that could pose a danger to the spacecraft, which is zooming along at more than 32,500 mph (52,300 km/h) relative to the sun. But the first hazard-search image...

 
Barrier Reef spared 'danger' listing

The Great Barrier Reef should not go on the World Heritage danger list, according to a United Nations draft report....

 
[Cell Metabolism] LEM gets T cells the energy they need

During an infection, T cells proliferate extensively to build a sufficient army to defeat the invading pathogen. Carefully regulated changes in metabolism let T cells do this, but the – [Read More]...

 
[Microbiology] Cooperation causes van Gogh to appear

Cell-cell interactions underlie many fundamental aspects of biology, even when those cells are normally considered autonomous, such as bacteria. Van Gestel et al. studied how – [Read More]...

 
Impulsivity linked to binge eating

Do you get impulsive when you're upset? If so, this could be putting you at risk for binge eating. The more impulsive you are, the more likely it is you'll binge eat when experiencing negative feelings....

 
No Human Error Seen in Anthrax Mishap, U.S. Army Chief Says

U.S. personnel working at an Army facility in Utah appeared to follow correctly all the outlined procedures to inactivate anthrax before they mistakenly shipped off live samples of the deadly bacteria -- Read more on ScientificAmerican.com...

 
Big Bang show creates $4m scholarship

The cast and creators of TV comedy The Big Bang Theory create a scholarship fund for low-income science students....

 
'Man-eating tiger' to stay in zoo

A court in India's Rajasthan state rejects a plea to release a tiger who has been branded a killer and caged....

 
Engineered bacteria detect cancer and diabetes in urine

Two types of microbes can flag millimeter-sized tumors or high levels of glucose...

 
John Nash’s memorable final appearances

Days before death, mathematician fascinated Abel Prize audiences...

 
A Few of My Favorite Spaces: The Topologist's Sine Curve

The topologist's sine curve is a classic example of a space that is connected but not path connected: you can see the finish line, but you can't get there from here. -- Read more on ScientificAmerican.com...

 
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