Last September, a clock began counting down in New York’s Union Square.
It read 7 years 103 days and 15 hours, the time left until the world will have emitted enough carbon to blow its surest chance of keeping global average temperature rise below 1.5 C.
It was a reminder of how agonizingly short we are on time.
And so the last 12 months were always going to be important. But events occurred this year that may have made 2020 the most pivotal year ever in the effort to achieve that all-important temperature target.