Category Environment/Geology

This diagram depicts the way a mid-infrared laser (red cylinder, left) can send a beam through the atmosphere that generates filaments of ionized air molecules (multicolored beam, center, shown with magnified view). These filaments, which can be kilometers long, help to keep the beam concentrated enough to generate mid-infrared light in air (blue cloud, right) that can reveal detailed chemical composition through spectral analysis (chart at right) of the light picked up by a mid-infrared detector (bottom). Credit: Diagram courtesy of the researchers

Researchers have found a new way of using mid-infrared lasers to turn regions of molecules in the open air into glowing filaments of electrically charged gas, or plasma...

Scientists have come up with a way to turn the most common form of plastic into liquid fuel.

A new way of recycling millions of tons of plastic garbage into liquid fuel has been devised by researchers from the University of California, Irvine and the Shanghai Institute of Organic Chemistry (SIOC) in China. “Synthetic plastics are a fundamental part of modern life, but our use of them in large volume has created serious environmental problems,” said UCI chemist Zhibin Guan. “Our goal through this research was to address the issue of plastic pollution as well as achieving a beneficial outcome of creating a new source of liquid fuel.”

Guan and Zheng Huang, his collaborator at SIOC et al have figured out how to break down the strong bonds of polyethylene, the most common commercially available...

Light pollution now blots out the Milky Way for eight in 10 Americans. Bright areas in this map show where the sky glow from artificial lighting blots out the stars and constellations. An international team of researchers has released the new World Atlas of Artificial Sky Brightness, in a paper published in Science Advances today. Credit: Falchi et al, Science Advances; Jakob Grothe/National Park Service, Matthew Price/CIRES/CU-Boulder.

The Milky Way is but a faded memory to one third of humanity and 80% of Americans, according to a new global atlas of light pollution. In most developed countries, the ubiquitous presence of artificial lights creates a luminous fog that swamps the stars and constellations of the night sky...

(Colour online) Pre- and post-video test scores by age group (Study A). Values shown are means ± standard errors. All pre-test to post-test improvements were statistically significant (paired t-tests, p < .001 for each)

Does “edutainment” such as content-rich music videos have any place in the rapidly changing landscape of science education? A new study indicates that students can indeed learn serious science content from such videos. The study, titled ‘Leveraging the power of music to improve science education’ and published by International Journal of Science Education, examined over 1,000 students in a 3-part experiment, comparing learners’ understanding and engagement in response to 24 musical and non-musical science videos.

The central findings were that
(1) across ages and g...