From one of the world’s leading moral voices, this urgent and eye-opening book makes the case thatprotecting humanity’s future is the central challenge of our time.If all goes well, human history is just beginning. Our species could survive for billions of years—enough time toend disease, poverty, and injustice, and to flourish in ways unimaginable today. But this vast future is at risk. With theadvent of nuclear weapons, humanity entered a new age, where we fa...

This is an open access title available under the terms of a CC BY-NC-ND 4.0 International licence. It is free to read at Oxford Scholarship Online and offered as a free PDF download from OUP and selected open access locations. Very often we're uncertain about what we ought, morally, to do. We don't know how to weigh the interests of animals against humans, how strong our duties are to improve the lives of distant strangers, or how to think about the ethics of bringing new people into exist...