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Research: Deep sea basalt may help reveal volcanoes’ impact on climate

By examining volcanic rocks retrieved from deep in the ocean, scientists have found they can estimate the carbon dioxide stored beneath much of the earth’s surface – a development that could enhance understanding of how volcanoes affect climate. The research by University of Florida scientists and others will be reported this week in the journal Nature.

Scientists examined chunks of basalt, a type of volcanic rock formed when lava cools, from 12,000 feet below the Pacific along a massiv

Bypass research not in vein

Repeat bypass operations might soon be a thing of the past, thanks to new research by a team at St George`s Hospital Medical School in Tooting, London. The origins of diseased cells in vein grafts that form following heart bypass operations have been found for the first time using a new model. The discovery by Professor Xu and colleagues is published today in the journal, Circulation Research.

Every week around 15 people have heart bypass operations in St George`s Hospital alone. In each c

Chemical switch determines if healthy cells are killed by chemotherapy

Investigators at Washington University School of Medicine in St. Louis have discovered a mechanism that helps explain why healthy cells are not killed by DNA-damaging cancer chemotherapy drugs. The findings are published in the Oct. 4 issue of the journal Cell.

DNA-damaging agents are the most common kind of drugs used to treat cancer. Like most chemotherapy drugs, these are carried in the blood and travel throughout the body. They work by irreparably gumming up DNA in rapidly dividing tumo

Suction and pull drive movement of Earth’s plates, U-M researchers show

As anyone with a smattering of geological knowledge knows, Earth’s crust is made up of plates that creep over the planet’s surface at a rate of several inches per year. But why do they move the way they do? Even experts have had trouble teasing out the exact mechanisms.

A model developed by University of Michigan researchers and published in the Oct. 4 issue of Science provides a relatively simple explanation.

“It’s been known that slabs (portions of plates that ext

A nanosecond to make a decision

The scientists at A.F. Ioffe Physical Technical Institute, Russian Academy of Sciences, decided to restore the production of semi-conductor devices for pulse radiotechniques which was interrupted at the beginning of the 1990s. These devices have recently found wide application in different areas of technology: in ultra broadband apparatuses of communication, geopositioning and following, radars where a signal of high power should be generated for short time intervals. The idea of creating the devices

Astronomers put quasars in their place

A team of UK astronomers, led by postgraduate student Ed Hawkins, has made a decisive step toward resolving an argument that has rumbled on in the astronomical community for decades. The scientists from the University of Nottingham have been investigating the properties of quasars and nearby galaxies. As part of this study, they have overturned previous analyses which suggested that these two classes of object are physically associated, thus confirming the alternative, more widely-held view that quas

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