This is <I>Polypterus senegalus</I>.

Neuroscientists reverse memories' emotional associations

Most memories have some kind of emotion associated with them: Recalling the week you just spent at the beach probably makes you feel happy, while reflecting on being bullied provokes...

Study shows 25 percent fewer opioid-related deaths in states allowing medical marijuana

On average, states allowing the medical use of marijuana have lower rates of deaths resulting from opioid analgesic overdoses than states without such laws. Opioid analgesics, such as OxyContin, Percocet...

Spectacular supernova's mysteries revealed

New research by a team of UK and European-based astronomers is helping to solve the mystery of what caused a spectacular supernova in a galaxy 11 million light years away,...

Zombie ant fungi 'know' brains of their hosts

A dead ant manipulated by a species of so-called "zombie ant fungus" clings to a twig in a South Carolina forest. Newly published Penn State research represents the first extensive study of zombie ants in North America.A parasitic fungus that reproduces by manipulating the behavior of ants emits a cocktail of behavior-controlling chemicals when encountering the brain of its natural target host, but not when infecting...

Radio telescopes settle controversy over distance to Pleiades

Astronomers have used a worldwide network of radio telescopes to resolve a controversy over the distance to a famous star cluster -- a controversy that posed a potential challenge to...

From nose to knee: Engineered cartilage regenerates joints

This figure shows an MRI of a defect tissue site before (left) and four months after (right) transplantation.Human articular cartilage defects can be treated with nasal septum cells. Researchers at the University and the University Hospital of Basel report that cells taken from the nasal septum are...

A touching story: The ancient conversation between plants, fungi and bacteria

The mechanical force that a single fungal cell or bacterial colony exerts on a plant cell may seem vanishingly small, but it plays a heavy role in setting up some...

Stone-tipped spears lethal, may indicate early cognitive and social skills

Spears were carefully constructed to measure the same for the controlled experiments.Attaching a stone tip on to a wooden spear shaft was a significant innovation for early modern humans living around 500,000 years ago. However, it was also a costly behavior...

Orion rocks! Pebble-size particles may jump-start planet formation

Radio/optical composite of the Orion Molecular Cloud Complex showing the OMC-2/3 star-forming filament. GBT data is shown in orange. Uncommonly large dust grains there may kick-start planet formation.Rocky planets like Earth start out as microscopic bits of dust tinier than a grain of sand, or so theories predict.

Duality principle is 'safe and sound'

Decades of experiments have verified the quirky laws of quantum theory again and again. So when scientists in Germany announced in 2012 an apparent violation of a fundamental law of...

Scientists looking across human, fly and worm genomes find shared biology

Researchers analyzing human, fly, and worm genomes have found that these species have a number of key genomic processes in common, reflecting their shared ancestry. The findings, appearing Aug. 28, 2014, in the journal Nature, offer insights into embryonic development,...

Best view yet of merging galaxies in distant universe

ALMA, the VLA, and other telescopes used gravitational lensing to obtain the best view yet of a collision that took place between two galaxies when the Universe was only half its current age. These new studies of the galaxy H-ATLAS J142935.3-002836 have shown that this complex and distant object looks surprisingly like the well-known local galaxy collision, the Antennae Galaxies. The foreground galaxy is doing the lensing and around it is an almost complete ring &#8212; the smeared out image of a star-forming galaxy merger far beyond. This picture combines the views from the Hubble Space Telescope and the Keck-II telescope on Hawaii (using adaptive optics) along with the ALMA images shown in red. The ALMA data also give information about the motions of the material in the distant merging galaxies and were vital in unravelling the complex object.An international team of astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) and the Karl G. Jansky Very Large Array (VLA) -- among other telescopes -- has obtained the best...

Existing power plants will spew 300 billion more tons of carbon dioxide during use

This is a coal-burning power plant at the Turceni Power Station in Romania.Existing power plants around the world will pump out more than 300 billion tons of carbon dioxide over their expected lifetimes, significantly adding to atmospheric levels of the climate-warming gas,...

Study finds marine protected areas inadequate for protecting fish and ocean ecology

A school of common bluestripe snappers in the waters off Kenya. A new study conducted by the Wildlife Conservation Society and other organizations reports that further expansion of marine protected areas is needed to protect fish species playing key ecological functions.A new study reports that an expansion of marine protected areas is needed to protect fish species that perform key ecological functions. According to investigators from the Wildlife Conservation Society...

New research reveals how wild rabbits were genetically transformed into tame rabbits

The genetic changes that transformed wild animals into domesticated forms have long been a mystery. An international team of scientists has now made a breakthrough by showing that many genes...

New technique uses fraction of measurements to efficiently find quantum wave functions

The result of every possible measurement on a quantum system is coded in its wave function, which until recently could be found only by taking many different measurements of a...

Rubber meets the road with new ORNL carbon, battery technologies

ORNL researchers' goal is to scale up the recovery process and demonstrate applications as anodes for lithium-ion batteries in large-format pouch cells.Recycled tires could see new life in lithium-ion batteries that provide power to plug-in electric vehicles and store energy produced by wind and solar, say researchers at the Department of...

Novel 'butterfly' molecule could build new sensors, photoenergy conversion devices

Exciting new work by a Florida State University research team has led to a novel molecular system that can take your temperature, emit white light, and convert photon energy directly...

Scientist uncovers red planet's climate history in unique meteorite

Was Mars -- now a cold, dry place -- once a warm, wet planet that sustained life? And if so, how long has it been cold and dry?

Study: Earth can sustain more terrestrial plant growth than previously thought

Scientists have historically underestimated the potential productivity of the earth's land plants, researchers report in a new study.A new analysis suggests the planet can produce much more land-plant biomass -- the total material in leaves, stems, roots, fruits, grains and other terrestrial plant parts -- than previously...

Physics research removes outcome unpredictability of ultracold atomic reactions

Probability density -- given by the radius of the surface points to the origin -- of an Efimov trimer state at different three-body geometries that are characterized by the polar angle -- indicated by the trimer legends. The azimuthal angle characterizes the permutation of three atoms. The key feature in the probability density is that unlike ordinary molecular binding that mostly has a single geometry, the Efimov trimer covers have a broad range of geometries. The atoms in such states behave more like in a fluid drop.Findings from a physics study by a Kansas State University researcher are helping scientists accurately predict the once unpredictable.