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With the United States facing tough economic times, science gets small change and less sense of direction from President Bush's research and development budget proposal for 2005.
Even munitions that are never used in anger can have a long-term impact on the environment, and the military is anxious to minimize the risks. Jim Giles talks to the chemists who are developing ‘green’ explosives.
We may not have known we were doing it, but humans have been changing the climate for thousands of years, a new theory suggests. Could our ancestors have saved us from an ice age? Betsy Mason investigates.
A long-awaited breakthrough has been made in lattice quantum chromodynamics — a means of calculating the effect of the strong force between sub-atomic particles that could, ultimately, unveil new physics.
The causes of defects in the blood system of newborn babies can be hard to establish if the errors are not inherited. An elegant approach has identified a gene that can encourage new blood vessels to grow.
Some species of plant will prefer a world with higher levels of atmospheric carbon dioxide. When those species are invasive pests, the invaders may well flourish at the expense of the native vegetation.
The silicon chip has been the mainstay of the electronics industry and it may similarly come to dominate photonics. A key component — a high-frequency optical modulator — has now been fabricated.
In an echo of events that unfolded earlier in the West, declines of vulture populations in the Indian subcontinent are linked to an environmental poison. Three species of these birds approach extinction.
Damaged DNA must be removed with the utmost precision, as mistakes are costly. The structure of a repair enzyme bound to its substrate provides a welcome clue to how this is achieved.
A neglected mathematical theory is enjoying new popularity, thanks to its relevance to network dynamics in biological systems. The beating of a leech's heart is just one example that has a mathematical basis in ‘groupoid theory’.
