Scientists Hunt down the Brain Circuit Responsible for Alcohol Cravings

Confocal analysis at 63x magnification, followed by the three-dimensional reconstruction of neuronal cell bodies and branches. The image shows an example of eYFP and CRF in the same neuron. This rendered isosurface analysis demonstrated the colocalization of CRF immunoreactivity within CeA neurons that also expressed Cre-dependent eYFP and validates the crh-Cre rat as a tool to gain more direct access to CRF neurons to study their functional neuroanatomy.
Credit: George lab

Study may open the door to developing drug therapies or even gene therapies for alcohol addiction. Scientists at Scripps Research have found that they can reverse the desire to drink in alcohol-dependent rats – with the flip of a switch...

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Levitating Objects with Light

Conceptual illustration of a nano-patterned object reorienting itself to remain in a beam of light.
Credit: Courtesy of the Atwater laboratory

Nanoscale patterning could enable precise manipulation of objects on many scales. Researchers at Caltech have designed a way to levitate and propel objects using only light, by creating specific nanoscale patterning on the objects’ surfaces. Though still theoretical, the work is a step toward developing a spacecraft that could reach the nearest planet outside of our solar system in 20 years, powered and accelerated only by light.

A paper describing the research appears online in the March 18 issue of the journal Nature Photonics...

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Hayabusa2 Probes Asteroid Ryugu for secrets

Ryugu is a C-type asteroid — rich in carbon — about 900m wide.
Credit: © 2019 Seiji Sugita et al., Science

Hayabusa2 helps researchers understand ingredients for life in early solar system. The first data received from the Hayabusa2 spacecraft in orbit of asteroid Ryugu helps space scientists explore conditions in the early solar system. The space probe gathered vast amounts of images and other data which gives researchers clues about Ryugu’s history, such as how it may have formed from a larger parent body. These details in turn allow researchers to better estimate quantities and types of materials essential for life that were present as Earth formed.

“The ground shook. My heart pounded. The clock counted...

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Supercrystal: A Hidden Phase of Matter Created by a Burst of Light


A 3D image of a supercrystal from phase-field simulations using the software ?-PRO.
Credit: L-Q Chen Group, Penn State

“Frustration” plus a pulse of laser light resulted in a stable “supercrystal” created by a team of researchers led by Penn State and Argonne National Laboratory, together with University of California, Berkeley, and two other national laboratories.

This is one of the first examples of a new state of matter with long-term stability transfigured by the energy from a sub-pico-second laser pulse. The team’s goal, supported by the Department of Energy, is to discover interesting states of matter with unusual properties that do not exist in equilibrium in nature.

“We are looking for hidden states of matter by taking the matter out of its comfortable state, which w...

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