Science

Tags:

Overshoot Day: Still Living Beyond Our Means

World Wildlife Fund (WWF) issued the following statement from Keya Chatterjee, director of renewable energy and footprint outreach, about Global Footprint Network announcement that humanity has exhausted Earth’s resource budget for the year.

Tags:

Littlest Continent Had Biggest Role in Sea Level Drop

australia20130819-640_0.jpg
Changes in Australia's mass as reported by data from NASA's Gravity Recovery and Climate Experiment (GRACE) satellites from June 2010 to February 2011. Areas in greens and blues depict the greatest increases in mass, caused by excessive precipitation. The contour lines represent various land surface elevations. A new study co-authored and co-funded by NASA finds extensive flooding in Australia, combined with the continent's soils and unique topography, were the biggest contributors to the drop in global sea level observed in 2010 and 2011.

Tags:

Open access to research publications reaching 'tipping point', said European Commission

The global shift towards making research findings available free of charge for readers—so-called 'open access'—was confirmed in a study funded by the European Commission. This new research suggests that open access is reaching the tipping point, with around 50% of scientific papers published in 2011 now available for free. This is about twice the level estimated in previous studies, explained by a refined methodology and a wider definition of open access. The study also estimates that more than 40% of scientific peer reviewed articles published worldwide between 2004 and 2011 are now available online in open access form. The study looks at the EU and some neighbouring countries, as well as Brazil, Canada, Japan and United States of America.

Tags:

‘Groovy’ hologram creates strange state of light at visible and invisible wavelengths: Nanostructured device controls the intensity, phase, and polarization of light for wide applications in optics

Applied physicists at the Harvard School of Engineering and Applied Sciences (SEAS) have demonstrated that they can change the intensity, phase, and polarization of light rays using a hologram-like design decorated with nanoscale structures.

48020.jpg
A new three-in-one optical element can control light’s amplitude, phase, and polarization through a wedding of old-fashioned holograms and state-of-the-art nanoscale features.

Tags:

Lead Exposure Tied to Early Risk of School Suspension

Kids' attention levels and behavior may be affected, study suggests.

backpack_0.jpg

http://healthfinder.gov/News/Article/679309/lead-exposure-tied-to-early-...

Tags:

ALMA Takes Close Look at Drama of Starbirth

eso1336a_0_0_0.jpg
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have obtained a vivid close-up view of material streaming away from a newborn star. By looking at the glow coming from carbon monoxide molecules in an object called Herbig-Haro 46/47 they have discovered that its jets are even more energetic than previously thought. The very detailed new images have also revealed a previously unknown jet pointing in a totally different direction.

Tags:

Iranian Scientists Find Simple Method to Produce Antibacterial, Pollutant-Adsorbing Fibers

Iranian researchers from Tarbiat Modarres University used nano-oxides and metal-organic frameworks to produce a new type of antibacterial filter that is able to adsorb pollutants such as iodine and Congo red.

48014.jpg

Tags:

Graphene nanoscrolls are formed by decoration of magnetic nanoparticles

48005.jpg

Tags:

Mars Rover Opportunity Working at Edge of 'Solander'

pia17087-640_0_0.jpg
This view from NASA's Mars Exploration Rover Opportunity shows an area where a pale-toned geological unit called the "Burns Foundation," in the foreground, abuts a different geological unit. The darker unit, believed to be older, marks the edge of "Solander Point," a raised segment of the western rim of Endeavour Crater.

Tags:

NASA Rover Gets Movie as a Mars Moon Passes Another

pia17351-640_0_0.jpg
This illustration provides a comparison for how big the moons of Mars appear to be, as seen from the surface of Mars, in relation to the size that Earth's moon appears to be when seen from the surface of Earth. Earth's moon actually has a diameter more than 100 times greater than the larger Martian moon, Phobos. However, the Martian moons orbit much closer to their planet than the distance between Earth and Earth's moon.