elegraph.co.uk/26e5f8b4bb20939b0444bb9e7c5e010735a19f37/original.jpg> 9 min read • 1 hour ago 4 EFTA_R1_01322502 EFTA02348418 telegraph.co.uk / Sarah Wheeler David Haig-Thomas was ahead of his time when, in 1937, he embarked on an Arctic expedition to study the ozone layer. Nearly 80 years on, his great-nephew is traci...