Mayor Bill de Blasio
Mr. Secretary General, thank you for your forceful leadership on climate change, and I welcome you all.
It's an honor for New York to host this momentous gathering. So many people who are fighting to save our planet have converged on our city to spark greater action, as we saw powerfully at Sunday's march.
We know humanity is facing an existential threat. The cause is us – how we heat our homes, how we transport ourselves, the reckless way in which...