A model is showing the charge transfer (e-) mechanism of Rhodamine B molecules (top) interacting with N-doped graphene (bottom sheet) when excited with different laser lines, which leads to ultrasensitive molecular sensor with N doped graphene. The white, blue and red balls represent carbon, nitrogen and oxygen atom respectively.

NASA catches Estelle becoming post-tropical

On July 22 at 0000 UTC (July 21 at 8 p.m. EDT) the VIIRS instrument aboard NASA-NOAA-DOD's Suomi NPP satellite captured this visible light image of Tropical Storm Estelle in the eastern Pacific Ocean.The Suomi NPP satellite passed over Tropical Storm Estelle as it was transitioning to a post-tropical storm in the Eastern Pacific Ocean.

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Lichen: Apparently happy couple really a threesome

July 21, 2016) Since the discovery of their true nature 140 years ago, lichens have been the poster children for symbiosis. In the textbook definition of a lichen, the filaments...

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Mars rover's laser can now target rocks all by itself

NASA's Curiosity Mars rover autonomously selects some targets for the laser and telescopic camera of its ChemCam instrument. For example, on-board software analyzed the Navcam image at left, chose the target indicated with a yellow dot, and pointed ChemCam for laser shots and the image at right.New software is enabling ChemCam, the laser spectrometer on NASA's Curiosity Mars rover, to select rock targets autonomously -- the first time autonomous target selection is available for an instrument...

World's most sensitive dark matter detector completes search

The LUX Dark Matter Experiment operates a mile underground at the Sanford Underground Research Facility. It's location helps shield the detector from background radiation that could confound a dark matter signal.The Large Underground Xenon (LUX) dark matter experiment, which operates beneath a mile of rock at the Sanford Underground Research Facility in the Black Hills of South Dakota, has completed...

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Ancient feces provides earliest evidence of infectious disease being carried on Silk Road

These are 2,000-year-old personal hygiene sticks with remains of cloth, excavated from the latrine at Xuanquanzhi.An ancient latrine near a desert in north-western China has revealed the first archaeological evidence that travellers along the Silk Road were responsible for the spread of infectious diseases along...

Attosecond physics: Mapping electromagnetic waveforms

Munich physicists have developed a novel electron microscope that can visualize electromagnetic fields oscillating at frequencies of billions of cycles per second.

Borrowing from pastry chefs, engineers create nanolayered composites

Adapting an old trick used for centuries by both metalsmiths and pastry makers, a team of researchers at MIT has found a way to efficiently create composite materials containing hundreds...

New detector at South Pole shows early success at neutrino hunting

University of Kansas professor David Besson pulling hardware out of a hole with a previously-deployed antenna.In the second it takes to read these words, 65 billion neutrinos will shoot through every square centimeter of your body. Luckily, these infinitesimal particles don't do any harm --...

Some bacteria have lived in the human gut since before we were human

An artist's rendition of bacteria that live in the gut of people and their closest relatives. A new study finds that these microbes have lived -- and evolved -- with us since before we were human.Some of the bacteria in our guts were passed down over millions of years, since before we were human, suggesting that evolution plays a larger role than previously known in...

Scientists unlock 'green' energy from garden grass

Garden grass could become a source of cheap and clean renewable energy, scientists have claimed.

Newly discovered material property may lead to high temp superconductivity

This image shows high-energy x-ray diffraction patterns of the reciprocal lattice plane (H?K?0). The CDW superstructure peaks are marked by blue arrows (logarithmic color scale).Researchers at the U.S. Department of Energy's (DOE) Ames Laboratory have discovered an unusual property of purple bronze that may point to new ways to achieve high temperature superconductivity.

Can't see the wood for the climbers -- the vines threatening our tropical forests

Instead of taking decades to recover, tropical forests are at risk of taking hundreds of years to re-grow because of lianas, which spread rapidly following extensive tree-felling.

How humans and wild birds collaborate to get precious resources of honey and wax

Yao honey-hunter Orlando Yassene holds a male greater honeyguide temporarily captured for research in the Niassa National Reserve, Mozambique.By following honeyguides, a species of bird, people in Africa are able to locate bees' nests to harvest honey. Research now reveals that humans use special calls to solicit...

Why do consumers participate in 'green' programs?

Tomas Hult, director of MSU's International Business CenterFrom recycling to reusing hotel towels, consumers who participate in a company's "green" program are more satisfied with its service, finds a new study co-led by a Michigan State University...

Hey robot, shimmy like a centipede

What makes centipedes move with such agility? Researchers at Kyoto University have used simulations and robotics to find the answer -- and a surprising truth.Centipedes move quickly. And when one is coming directly at you, you might not care to spend a moment pondering its agility.

Genes find their partners without matchmakers

A new study provides more evidence that identical sections of DNA can match up with each other without the help of other molecules.

Predatory prawns eliminate a major parasite more effectively than drugs alone

In the late 1970s, a new drug held the promise of wiping out a disease that currently affects more than 250 million people. Nearly 40 years later, the drug, praziquantel,...

NASA's Hubble looks to the final frontier

This view of a massive cluster of galaxies unveils a very cluttered-looking universe filled with galaxies near and far. Some are distorted like a funhouse mirror through a "space warp" phenomenon first predicted by Einstein a century ago.Celebrating its 50th anniversary this year, the TV series "Star Trek" has captured the public's imagination with the signature phrase, "To boldly go where no one has gone before." NASA's...

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Scorpionfish too deep for SCUBA divers caught by submersible turns out to be a new species

Live specimen of the new scorpionfish (<i>Scorpaenodes barrybrowni</i>).Discovered by scientists using the manned submersible Curasub in the deep-reef waters of the Caribbean island of Curaçao, a new scorpionfish species is the latest one captured with the help...

Temperature helps drive the emergence of different personalities in spiders

A male subsocial spider <em>Anelosimus studiosus</em> is with prey in a messy web typical of this widespread species. Austin, Texas, USA.Like people, animals have personalities. And their personalities differ, sometimes hugely, on traits like shyness and aggressiveness. Among the big questions are where those differences come from, why they exist,...

New therapeutic targets for small cell lung cancer identified

This is Dr. Jane Johnson and Dr. Melanie Cobb.UT Southwestern Medical Center researchers have identified a protein termed ASCL1 that is essential to the development of small cell lung cancer and that, when deleted in the lungs of...

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