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Taking the Pulse of a Black Hole System

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Using two NASA X-ray satellites, astronomers have discovered what drives the “heartbeats” seen in the light from an unusual black hole system. These results give new insight into the ways that black holes can regulate their intake and severely curtail their growth.

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Mercury, aquatic environments, anoxic environments, Nature, Organic Matter, Methylmercury, fish

Natural Dissolved Organic Matter Plays Dual Role in Cycling of Mercury

Nature has a bit of a Jekyll and Hyde relationship with mercury, but researchers at the Department of Energy’s Oak Ridge National Laboratory have made a discovery that ultimately could help explain the split personality.

Medicine

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Interactions of Three Proteins Might Disrupt Neural Network in Alzheimer’s

Though the cause of Alzheimer’s disease still is unknown, recent studies have implicated three proteins strongly in its onset., amyloid beta, tau, and Fyn. New research from UAB and others indicates that interactions between those three proteins might lead to brain dysfunction and AD in a mouse model of the disease.

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Attention Ladies and Gentlemen: Courtship Affects Gene Expression

Scientists from Texas have made an important step toward understanding human mating behavior by showing that certain genes become activated in fruit flies when they interact with the opposite sex. This research shows that courtship behaviors may be more influenced by genetics than previously thought. Understanding why and how these genes become activated may also lead to insight into disorders such as autism.

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Crocodile, Ancient, Ancestor, Fossil, West Texas, Texas Tech University, Paleontology

Researchers Discover ‘Great-Grandmother’ of Crocodiles

The newly discovered crocodile ancestor came on the scene about the same time as dinosaurs began evolving.

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NASA Hubble Space Telescope, Hubble Ultra Deep Field, faint galaxy counts via gravitational lensing, Nature journal, American Astronomical Society meeting in Seattle Washington

In Deep Galaxy Surveys, Astronomers Get a Boost from Gravity

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In a presentation at the American Astronomical Society meeting this week and a related paper in the current issue of the journal Nature, researchers using Hubble Space Telescope archival data say that as many as 20 percent of the most distant galaxies currently detected appear brighter than they actually are, because of an effect called "strong gravitational lensing."

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Galaxy, Galaxy Formation, starbursting, Early Universe

Astronomers’ Camera Reveals Early Galaxies

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An international team of astronomers has detected one of the earliest “protoclusters” of galaxies ever, about 12.5 billion light years from Earth. In the current issue of Nature, they report catching the cluster in the act of formation when the Universe was only 1 billion years old.

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Gravitational Lensing, Galaxy Surveys, Galaxies

In Deep Galaxy Surveys, Astronomers Get A Boost - From Gravity

Astronomers who survey galaxies in the distant universe are getting some unexpected help from gravity, according to a new study.

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Technique Allows Researchers to Identify Key Maize Genes for Increased Yield

Scientists have identified the genes related to leaf angle in corn (maize) – a key trait for planting crops closer together, which has led to an eight-fold increase in yield since the early 1900s.

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New Microscope Records Firing of Thousands of Individual Neurons in 3-D

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UCLA researchers have develop a non-invasive, ultra high-speed microscope that can record the firing of thousands of individual brain cells—neurons—as they communicate or mis-communicate with each other, in real time and in 3D.







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