The world is in the midst of what may be the most deadly pandemic of the past 100 years. Threats to humanity, and how we address them, define our time.

We live during the most important era of human history. In the twentieth century, we developed the means to destroy ourselves – without developing the moral framework to ensure we won't. This is the Precipice, and how we respond to it will be the most crucial decision of our time.Oxford moral philosopher Toby Ord explores the risks to humanity's future, from the familiar man-made threats of climate change and nuclear war, to the potentially greater, more unfamiliar threats from engineered pandemics and advanced artificial intelligence. With clear and rigorous thinking, Ord calculates the various risk levels, and shows how our own time fits within the larger story of human history. We can say with certainty that the novel coronavirus does not pose such a risk. But could the next pandemic? And what can we do, in our present moment, to face the risks head on?A major work that brings together the disciplines of physics, biology, earth and computer science, history, anthropology, statistics, international relations, political science and moral philosophy, The Precipice is a call for a new understanding of our age: a major reorientation in the way we see the world, our history, and the role we play in it.

'Splendid . . . The Precipice is a powerful book, written with a philosopher's eye . . . Ord's love for humanity and hope for its future is infectious' Spectator

'Ord's analysis of the science is exemplary . . . Thrillingly written' Sunday Times'A book that seems made for the present moment' New Yorker'Many people have recently found that they want to read books offering the grandest perspectives possible on human existence, such as Sapiens . . . Toby Ord's new book is a startling and rigorous contribution to this genre that deserves to be just as widely read' Evening Standard

Toby Ord is a moral philosopher focusing on the big picture questions facing humanity. Born in Australia, he is a Senior Research Fellow at the Future of Humanity Institute at Oxford University. He is the founder of Giving What We Can and co-founder of the Effective Altruism movement, which has raised more than a hundred million pounds for some of the world's most deserving causes. In 2020, alongside Shonda Rimes, Kanye West and JK Rowling, he was included on the Financial Times's 'the good list', which highlights the work of the world's ten most inspiring philanthropists. He has also advised DeepMind, the World Health Organisation, the World Bank, the World Economic Forum, the US National Intelligence Council and the UK Prime Minister's Office, among others. He lives in Oxford.