In this urgent and hard-hitting talk, Nobel Laureate Al Gore thoroughly dismantles the fossil fuel industry’s narrative of "climate realism," contrasting their misleading claims with the remarkable advancements in renewable energy. Drawing on data showing clear signs of progress across the world, Gore makes a powerful case that we already have everything needed to solve the climate crisis — and reminds us of what the most valuable renewable resource actually is. (Recorded at TED Countdown Summit 2025 on June 16, 2025)

As carbon emissions change the chemistry of the seas, ocean acidification threatens marine life and human livelihoods. How worried should you be about climate change’s so-called “evil twin”?