Beatles' tunes aid memory recall

Beatles hit to be played in space
The Beatles' Across the Universe will become the first song ever to be beamed directly into space next week, Nasa announces.

Bush 'seeks to ease wildlife law'
US environmentalists accuse President Bush of trying to rush through changes to the Endangered Species Act.

Sparrow numbers 'plummet by 68%'
The loss of green spaces in Britain has caused the number of house sparrows to drop sharply in the past 30 years.

Mammoth's genome pieced together
A US-Russian team announces that it has sequenced most of the genome of a woolly mammoth found in Siberia.

Final plea on Earth observation
Leading Earth observation scientists urge Gordon Brown to back Europe's environmental monitoring project, GMES.