Monday 10 February 1997
Tomorrow should see the launch, weather permitting, of the second repair mission for the Hubble Space Telescope. During the 10-day mission, the seven Space Shuttle crew will carry out at least four spacewalks and install two new astronomy instruments. These should allow it to gather 30 times more spectral data and 500 times more spatial data than existing instruments. One of their best applications will be the study of supermassive black holes. The HST, launched in 1990, was last fixed in 1993, and is expected to last until 2005.
Turning against the worm, a team of plant breeders in Germany, Denmark and the Netherlands have discovered a gene which renders plants resistant to nematodes - microscopic worms which destroy about pounds 70bn worth of crops worldwide every year. The work, reported in Science, followed the team's cloning of a gene which confers resistance to nematodes in wild beet plants. When transferred to sugar beets, the gene provides the same protection.
Seven years after its start, the project to sequence the whole genome of Escherichia coli, the bacterium more usually known as E. coli, has been completed. Nature reports that two teams, one in the US and another in Japan, have put their sequence data into public databases. Analysis shows that it contains many genes with unknown function, but Gordon Dougan, of Imperial College London, told Nature that it will be a useful guide to the "evolution of virulence" of these common gut flora.
The "flashbulb" effect of famous events, in which you remember everything about remarkable occasions, such as where you were when you heard that Kennedy had been shot, is probably caused by strong emotions. According to a report in Nature, teams in Germany and Edinburgh found that proteins which help form the neuronal connections that become our memories are released in a wave during strong stimulation. The process is indiscriminate, so we remember very well any occasion that sparks strong emotions.
American scientists have built the key elements of a computer that would run on DNA. Researchers at the University of Rochester in upstate New York created short sequences of DNA which performed the same function as logic gates in electronic computers. The work, reported in New Scientist, could lead to "DNA computers" which could potentially contain more computing power in a drop of water than in the world's biggest electronic supercomputer.
elephant appealThe first 23 lots in our charity auction have now gone. But there are 22 more still up for grabs
From rainforests and reefs to beaches and boat trips
The Silicon Valley awards which treat scientists like rockstars
comedy'Fresh Meat' star sees off stiff competition from Alan Carr, David Mitchell, Graham Norton, Lee Mack and Sarah Millican to win top prize
Mystery of Epping Forest 'big cat' is solved
North Korea: First Kim Jong-un orders execution of uncle - now it emerges that victim's wife was involved in decision to execute him
Australia incest case: Deformed children found in remote farming community after generations of inbreeding
Woman who miscarried in private prison 'made to clean up after herself,' court told
Fox News presenter tells viewers it is a 'fact' that both Jesus and Santa Claus are white
- 1 Italian court annuls prison sentence for elderly paedophile after 11-year-old victim tells investigators in Catanzaro that she loves him
- 2 Australia incest case: Deformed children found in remote farming community after generations of inbreeding
- 3 Woman who miscarried in private prison 'made to clean up after herself,' court told
- 4 Physicists discover 'clearest evidence yet' that the Universe is a hologram
- 5 Fox News presenter tells viewers it is a 'fact' that both Jesus and Santa Claus are white
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