Science
Penn Researchers Make First All-optical Nanowire Switch
Laser light is emitted from the end of a cadmium sulfide nanowire.
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Measuring mercury levels: Nano-velcro detects water-borne toxic metals
Coal plants like this one in West Chicago release mercury into the atmosphere which can end up in the water supply. This plant, the Crawford Generating Station, is among the last coal-fired plants to shut down in the city, and this move could help bring the already low mercury content in nearby Lake Michigan down even further.
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Use of Nanotechnology Growing among Iranian Industrialists
Different Iranian industries, including the country's auto-manufacturing companies, are making an increasing use of nanotechnology in their products.
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Needle beam could eliminate signal loss in on-chip optics: Harvard researchers create a light wave that propagates without spreading
Top: A micrograph and diagram of the metallic gratings that produce the needle beam. Bottom: An approximation of the experimental setup. A laser is focused from the glass substrate side onto the device. Once the non-diffractive surface wave is created, detailed information on its intensity distribution is gathered using an ultrahigh-spatial-resolution near-field scanning optical microscope.
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Rust Never Sleeps: Berkeley Lab-led Observations of Electron Hopping in Iron Oxide Hold Consequences for Environment and Energy
Iron oxide (rust) is a poor electrical conductor, but electrons in iron oxide can use thermal energy to hop from one iron atom to another. A Berkeley Lab experiment has now revealed exactly what happens to electrons after being transferred to an iron oxide particle.
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Proteins barge in to turn off unneeded genes and save energy
A few Angstroms make all the difference. The CueR protein binds to DNA at the start of a gene that protects against copper poisoning. When copper atoms bind to CueR, the protein changes shape just enough to twist the DNA - such a small distance that it can't be drawn in two dimensions - to turn on transcription of the gene. When the gene is no longer needed, the original form of CueR unceremoniously kicks the copper-bound form away, turning off transcription quickly to save energy.
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$18.5 million NSF grant to develop self-monitoring health devices
A schematic for an unobtrusive, wearable electronic health monitoring system. Penn State is part of a collaborative research effort to create self-powered devices to help people monitor their health.
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Dawn has Departed the Giant Asteroid Vesta
This image is from the last sequence of images NASA's Dawn spacecraft obtained of the giant asteroid Vesta, looking down at Vesta's north pole as it was departing.
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New Method for Rapid Separation of Uranyl Ions from Aqueous Solutions
The mentioned research group has set its main goal on preparing selective and environmentally friendly adsorbents for fast separation and concentration of uranyl and thorium from aqueous solutions, for quite a while.
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Human Rights
Fostering a More Humane World: The 28th Eurasian Economic Summi
Conscience, Hope, and Action: Keys to Global Peace and Sustainability
Ringing FOWPAL’s Peace Bell for the World:Nobel Peace Prize Laureates’ Visions and Actions
Protecting the World’s Cultural Diversity for a Sustainable Future
Puppet Show I International Friendship Day 2020