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When the appetite-enhancing hormone ghrelin was discovered a few years ago, researchers thought they had found the last of the major genes that regulate weight. They were wrong.

Introducing: obestatin, a newly discovered hormone that suppresses appetite.

The finding, to be published in the Nov. 11 issue of Science, offers a key to researchers developing treatments for obesity. In a nation that desperately needs to slim down – the U.S. Centers for Disease Control and P

Researchers can identify patients likely to respond to drug therapy, saving some from undergoing harsh procedures with little chance of success

Researchers at UCLA’s Jonsson Cancer have identified key characteristics in certain deadly brain tumors that make them 51 times more likely to respond to a specific class of drugs than tumors in which the molecular signature is absent.

The discovery of the telltale molecular signature – the expression of a mutant protein and

For most people, just a whiff of food that has made them sick in the past is enough to trigger a wave of nausea – and to prevent them from eating that food again. It’s a response that’s instantaneous, involuntary, and so fundamental to basic biology that it occurs in a broad range of species. Even worms, researchers have now shown, quickly learn to avoid smells associated with foods that have made them ill.

The new study, led by Howard Hughes Medical Institute investigat

By studying how superconductors interact with magnetic fields, Pitt researchers advance quest for higher-temperature superconducting materials

Superconductors are materials with no electrical resistance that are used to make strong magnets and must be kept extremely cold–otherwise, they lose their superconducting abilities. Even the “high-temperature” superconductors discovered in the 1980s must be kept at around -300°F.

The search for superconductors that function at hi

FameLab – a national competition to discover the new faces of UK science launched today in London (Tuesday 8 November 2005). The competition -dubbed the science world’s equivalent of Pop Idol – is the brainchild of the Cheltenham Science Festival and NESTA (the National Endowment for Science, Technology and the Arts) and supported by Pfizer, The Daily Telegraph, Research Councils UK and Channel 4.

Now in its second year, FameLab encourages scientists to inspire and excite public

The European spacecraft Venus Express has been successfully placed into a trajectory that will take it on its journey from the Earth towards its destination of the planet Venus, which it will reach next April. A virtual twin sister of the Mars Express spacecraft which has been orbiting the Red Planet since December 2003, Venus Express is the second planet-bound probe to be launched by the European Space Agency.

Venus Express will eventually manoeuvre itself into orbit around Ven