The limits of humanity

Reacting to robots, redefining our relationship with animals and revealing the things that are killing us now — a special series

As we learn more about our similarities, the battle for non-human rights grows

Why it’s in our nature to leave life-and-death issues to the last minute

Androids need human-like qualities to foster acceptance – but not too many

How life, death and disease have changed over the past 180 years