Is human memory unique?

Many academics believe that only humans can ‘mentally time travel’ to relive their experiences and imagine future ones. But Iona Twaddell reveals new research which indicates humans may not be so unique as scrub jays may share some of the same memory abilities.

Love is in the air

In the first online-only feature from I, Science Issue 30, Jess Norris finds out how our genes and environment – and our smell – affect who we fall in love with