Revisited: Weight of the world, the climate scientists who hold out hope

Australian climate scientists Lesley Hughes, Ove Høegh-Guldberg, and Graeme Pearman reflect on their life's work and the burden of knowing about the climate crisis. They discuss the urgent need for action on climate change, the impact on coral reefs, frustrations with politicians' insufficient actions, and the concept of assisted colonization to save species. They also highlight the fear of runaway climate change and the power of renewable energy.