Dutch scientists have found that more than twice as many people as thought may have been infected during a bird flu outbreak in Dutch chickens in 2003.
The flu is not the same as the one now breaking out again in East Asia, but it shows once again that these viruses are capable of unpleasant surprises.
Cannabis may loosen the stiff and spastic muscles of multiple sclerosis sufferers, and not just their minds, a follow-up study has found.
The results contradict findings from the first phase of the study, where improvements seemed to be largely due to "good moods".
“There does seem to be evidence of some benefit from cannabis in the longer term that we didn’t anticipate in the short term study,” says John Zajicek, at Peninsula Medical School in Exeter, UK, and one of the research team.
Reports that a group set up as part of the Search for Extraterrestrial Life (SETI) has detected a radio transmission that it suspects could be a signal from an alien civilisation have been dismissed by the organisation.
"Sorry, but there's nothing new to report," said David Anderson, director of SETI@home.
"The candidate signal in question was essentially ruled out as an ET [extra-terrestrial] signal because its Doppler drift rate varied too widely," Anderson told ZDNet UK, adding that this fact had first been reported back in April.
Two Neptune-sized planets have been discovered circling stars beyond our Solar System, US astronomers reported on Tuesday. The discoveries, which come less than a week after a similar announcement by European scientists, hint at a vast new class of extrasolar planet.
A new kind of planet has been discovered in a star system 50 light years away. It is the smallest world to be found outside our Solar System, and probably the first rocky planet found so far, astronomers revealed on Wednesday.
The planet orbits the star mu Arae, which has been monitored by a European team of astronomers using an instrument called HARPS (High Accuracy Radial velocity Planet Searcher), attached to the 3.6-metre telescope at La Silla observatory in Chile.