Even as Covid-19 swept across the world, the threat of climate change loomed right behind it as wildfires, heatwaves and global temperatures set new records this past year. Short-term drops in air pollution and carbon emissions and increases in clean energy provided a hopeful glimpse of how the world could be if it pursued a green recovery. However, all too soon actions as simple as wearing masks and respecting quarantines fell prey to the same political polarisation and misinformation campaigns in the U.S. that had thwarted climate action for years. What can we learn from how both coronavirus and climate change affect us, and how we respond to them? Join Katharine Hayhoe for a discussion that explores both the physical science and the psychology of how we understand the global challenges we face today.