A new method for 'recycling' hydrogen-containing fuel materials could open the door to economically viable hydrogen-based vehicles, according to research in an article appearing today in Angewandte Chemie.

Hydrogen has long been considered an ideal fuel for transportation; it is abundant and can be used to run a fuel cell, which is much more efficient than internal combustion engines, and that also eliminates the formation of gaseous byproducts that are detrimental to the environment.

Numerous studies have outlined the benefits of omega-3 fatty acids but recommendations on how much you should get by people not trying to sell you something are less common.   A team of French scientists say they have found the dose of DHA - docosahexaenoic acid, found in cold water fatty fish and fish oil supplements - that is "just right" for preventing cardiovascular disease in healthy men.

Every week you probably see papers ( here and elsewhere) reporting the discovery of new genetic variants that affect the risk of coronary artery disease and heart attacks.

It's an exciting time and the findings will undoubtedly lead to new biological insights into the mechanisms that cause heart attacks, which in turn may result in new types of treatments, but how much value is there to it individually now?   Is 'personalized medicine' for heart attacks on the way?

Functional magnetic resonance imaging (fMRI) is a technique widely used tdoay in studying the human brain but its actual value in correlation is unclear.   No one knows exactly how fMRI signals are generated at brain cell level but it is crucially important to interpreting these imaging signals.

Scientists from the Academy of Finland's Neuroscience Research Programme (NEURO) say they have discovered that astrocytes, support cells in brain tissue, play a key role in the generation of fMRI signals.

Do you long to hear the dulcet sounds of the salpinx, barbiton, aulos or the syrinx?   Of course not, because no one has heard them in centuries.   Most people have never even heard of them.

But you will soon have the chance to experience musical instruments familiar to ancient civilizations but long since forgotten.

Ancient instruments probably got lost because they were too difficult to build or too difficult to play.    The ASTRA (Ancient instruments Sound/Timbre Reconstruction Application) team is tasked with bringing them back to life and already have successfully reconstructed the sound of an earlier instrument called the 'epigonion'.

People sometimes think the space between stars is 'empty' but that's not the case.   That area is filled with patches of low-density gas and when a relatively dense clump of gas gets near a star, the resulting flow produces a drag force on any orbiting dust particles. The force only affects the smallest particles -- those about one micrometer across, or about the size of particles in smoke. 

This explains the otherwise difficult to understand shapes of those dust-filled disks, according to a team led by John Debes at NASA's Goddard Space Flight Center in Greenbelt, Md.