LifeThe truth about de-extinction: is it even possible, and why do it? Ambitious projects aim to put dire wolves, woolly mammoths and passenger pigeons back into our ecosystems. But with so many technical and ethical hurdles, what is the real motivation? Features
LifeHow symbiosis made Earth what it is – and why it’s key to our future Two life forms living together helped spark the evolution of all complex life. By learning to appreciate this process more fully, we might be able to harness it to heal our planet too Features