News today is rife with reminders of how climate change is affecting people around the world, from wildfires and floods to the loss of biodiversity and even human lives. But what exactly is climate change?

Reversing the climate crisis requires massive global investments. The more we wait, the higher the costs, both in terms of mitigating global temperature rise and coping with its impacts.

Cities worldwide are in the race to adapt to a changing climate. Everywhere, soaring temperatures fuelled by human-made greenhouse gas emissions are disrupting the delicate balance of our climate systems.