Life New species of Portuguese man o' war discovered in the Tasman Sea Genetic analysis shows that there are four varieties of Portuguese man o’ war, or bluebottle, including an Antipodean species that has yet to be named NewsSubscriber-only
Health Autoimmune conditions linked to reactivated X chromosome genes The inactivation of one copy of the X chromosome in female mammals may start to fail as they get older, which may be why women have a higher risk of autoimmune conditions such as lupus NewsFree