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As electronic devices shrink, the interaction between electrons and the silicon crystal lattice, described in terms of 'quasiparticles', is a central issue. Ultrashort laser pulses can track the birth of such a quasiparticle.
The two Voyager spacecraft are heading beyond the bounds of the Solar System, and Voyager 1 may now have encountered the 'edge' — the termination shock — of the solar wind. But not everyone agrees.
A large-scale effort to uncover the gene-expression profiles of individual neurons and create a demographic atlas of the brain is under way. First data from this project are revealing new information about neuronal development.
Elderly but healthy people are often seriously injured in falls. Exploiting the phenomenon of stochastic resonance, biological physicists have designed a shoe with a vibrating insole that helps maintain balance.
Why is the black hole at the centre of our Galaxy so dim, when those in other galaxies can outshine the stars around them? Newly discovered bursts of infrared radiation may give the first clues to what is going on.
In the brains of anaesthetized animals, neurons create spontaneous patterns of activity that resemble representations of visual stimuli. This finding may change our notions about visual perception.
Why did ancient flying reptiles have so much processing-power in the back of their brain? To provide highly responsive flight control, is an answer to emerge from an innovative analysis of pterosaur skulls.
Hepatitis C virus causes severe liver disease. Initial trials of a newly developed agent that prevents the virus reproducing itself look promising. But what are the future prospects for this treatment?
The microenvironment, or niche, in which stem cells reside controls their renewal and maturation. The niche that regulates blood-forming stem cells in adult animals has eluded researchers — until now.
Recovering the true evolutionary history of any group of organisms has seemed impossible. The availability of large amounts of genomic data promises an era in which the uncertainties are better constrained.
Warm-blooded animals of the same species, living in different climates, have different metabolic rates. In birds, this variation is not only due to physiological adaptation — it is inherent in the animals' genes.
The finished sequence of human chromosome 6 reveals an abundance of biological information previously buried within the draft of the human genome, and illustrates the increasing power of comparative genomics.
