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Leading conservationists warn that in order to save biodiversity, society's behaviour must change.
Astronomer Royal Martin Rees believes that planets resembling Earth may be discovered in the next two to three years – although it may take a further 20 years before we are able to capture an image of them.
A team of researchers from the UK and Finland has discovered why people who stay in education longer have a lower risk of developing dementia – a question that has puzzled scientists for the past decade.