The American space agency (Nasa) is considering privatising its fleet of space shuttles in an attempt to save money.

A database that contains the genetic details of all the bacteria and viruses that could be used in a bioterrorist attack should be established straight away, leading American scientists have said.

Rice plants which produce higher yields make less of the potent greenhouse gas methane, researchers have discovered.

Researchers are investigating the use of cloned animals to help produce antidotes for biological warfare agents.

Experts have said that the Bush administration?s plans for increased biological defense research could take away necessary funding from other medical research projects.

Genetically modified crops are no more harmful to the environment than conventional plant varieties, a major UK study has found.