Reuters Impact: 'Humanity has been too slow off the blocks' - London Mayor, Sadiq Hahn

London's Mayor, Sadiq Hahn (pictured) was the keynote speaker on day one of the two day Reuters Impact event. The Mayor, who was introduced by Reuters first female Editor-in-Chief, Alessandra Galloni, said the climate crisis was global problem and required global solutions and added that humanity had been too slow off the blocks.