Australia is the country most often named as best able to ride out a global catastrophe. Canada is on the other side of the ledger. Florian Ulrich Jehn is the lead author of the first review to map which places on Earth would hold up best in a global catastrophe, published Aug. 23 in the journal Global Challenges . The paper defines a global catastrophic risk as the death of a significant share of humanity, most commonly at least 10 per cent of the world’s population within months to years. It reviews 152 documents rather than modelling anything new. The authors sorted those threats...