摘要
The following commentary is based on the keynote speech Professor Lord Martin Rees,the United Kingdom’s Astronomer Royal,presented at Engineering in an Unpredictable World:The Global Grand Challenges Summit 2019 in London on 18 September 2019.This and other talks at the Summit are available to watch at:https://www.raeng.org.uk/policy/partnerships/international-policy-and-development/ggcs/2019/welcome/on-demand-2.Based at the University of Cambridge,Lord Rees is a cosmologist and astrophysicist,a philosopher of science,and a former President of the Royal Society.Besides his countless scientific papers,Lord Rees has written a wide range of books,from academic texts to best-selling popular science.The content of Lord Rees’s speech was drawn from his most recent book,On the Future:Prospects for Humanity,published in 2018[1].A Chinese translation of the book will be available in 2020.