LifeIs every species necessary or can we let some die out? There are thousands of species at risk of extinction, and we can’t save them all – how do conservationists think about which ones to focus on? Comment
HealthHow measles can do long-lasting damage to children's immune systems Low vaccination rates have led to measles outbreaks in several countries, but many people are unaware of how the virus can have an effect called ‘immune amnesia’ Comment