Science in 2011: Triumphs, disasters and climaxes – in pictures
There were extraterrestrial shenanigans, female orgasms, sabre-toothed squirrels and sperm-spattered squid; there was meltdown at Fukushima, the last flight of the space shuttle and a possible glimpse of the Higgs boson. Relive the defining scientific stories of the past 12 months