On 15 January 2009 Kevin Anton, now Alcoa's chief sustainability officer, was one of 150 passengers on board US Airways' flight 1549. A seasoned flyer, he likes to nod off after take-off, but on this occasion – as one of Alcoa's financial staff – he was getting to grips with some tricky figures when a flock of Canadian geese flew into and jammed the plane's engines, forcing the Airbus A320 to land on water.

In what became known as the 'Miracle on the Hudson', the plane glided to a halt on the Hudson River and everybody survived. Such an experience changes people.

Matthew Moggridge talks exclusively to Alcoa's chief sustainability officer, Kevin Anton.