A research team jointly involving the IRD, the CEA and the CNRS has very recently found phytochromes in a strain of nitrogen-fixing bacterium, Bradyrhizobium (1), symbiont on certain tropical leguminous plants (the Aeschynomene). Techniques of molecular biology, biophysics and biochemistry revealed that the newly-discovered phytochrome has an essential role as regulator of the bacterium’s photosystem synthesis. An identical function was shown in the photosynthetic bacterium Rhodopseudomonas palustris

A model of a system for growing plants to plan biological experiments in space has just left the company of ROVSING, in Ballerup near Copenhagen, on its way to ESA’s European Space Research and Technology Centre (ESTEC) in the Netherlands.

The full name of this experiment reference model is European Modular Cultivation System Experiment Reference Model (EMCS ERM). This will be used at ESTEC to plan and carry out experiments for growing plants in space. Then in 2003 the EMCS Flight Model will

A team of UK astronomers announced this month the discovery of cannibalistic stars that explain one of the mysteries surrounding the Big Bang. The stars are almost as old as the Universe and they reveal what space was like in the very beginning.

The team from the Open University found that a group of 14-billion-year-old stars were all in a spin (literally) because of a nasty phase earlier in their lives. They were, in short, cannibalistic stars. The scientists` discovery not only explains

iver air bags offer relatively little benefit in road vehicle crashes compared with seat belts, finds a study in this week’s BMJ.

Researchers in the United States identified all passenger vehicles that crashed during 1990-2000 in which the driver or passenger, or both, died. A sample of 51,031 driver-passenger pairs was analysed to estimate the association of driver air bags with driver fatality.

Having an air bag was associated with an 8% reduction in the risk of death, whether the

Road vehicles may soon be fitted with pop-up bonnets, windscreen airbags and energy absorbing bumpers to improve pedestrian safety, according to researchers in this week’s BMJ.

Collisions between pedestrians and road vehicles are responsible for more than a third of all traffic related fatalities and injuries worldwide, yet research has so far concentrated almost exclusively on increasing the survival of vehicle occupants, argue researchers at the University of Virginia, USA.

Crash

Record low numbers of highly-prized squid have devastated the Falkland Islands fishery this year. Less than 10,000 tonnes have been caught so far, making this the worst year since the fishery began in 1987. As described in this week`s SCIENCE British Antarctic Survey (BAS) scientists believe unfavourable oceanographic conditions in squid spawning grounds caused the slump in the fishery which is normally worth £17 million ($US 25 million) in licence fees.

The flying squid Illex argentinu