With a maximum altitude of 18 feet (5.5 M) above sea level and in a prime hurricane pathway, the Florida Keys are particular susceptible to climate change.

While NASA predicts that 2016 will be the hottest year ever, only 22 of the 197 parties to the Paris agreement have ratified it and since the largest nations have not yet done so, these countries add up to only 1% of global emissions.

In an unprecedented move Larry Fink, the CEO of Black Rock has sent a letter to all the CEOs of the S&P 500 urging them to focus on the long term and make their firms sustainable.