The developing world is most affected by climate change but has contributed the least to the problem. Meanwhile, rich countries historically exacerbated the environmental crisis and grew wealthy as a result -- but aren't helping developing countries build climate resilience, which is now more crucial than ever to slowing climate change everywhere. Economist Avinash Persaud has an ambitious proposal to reimagine that dynamic: the Bridgetown Initiative, a groundbreaking vision of how rich countries can catalyze climate mitigation, contribute to loss and damages and help build a sustainable future for all.

TikTok content creator Taylor Cassidy has a hot take: going viral won't necessarily change the world. Inviting us to rethink what it means to be successful online, she shares how to retain your voice on social media -- and reminds us all where true impact lies.

What can we make of a design that shows up over and over in disparate cultures throughout history? Theorist Terry Moore explores "Penrose tiling" -- two shapes that fit together in infinite combinations without ever repeating -- and ponders what it might mean.

Based on her work for a CIA task force aimed at predicting civil wars, political scientist Barbara F. Walter examines the rise in extremism and threats to democracies around the globe -- and paints an unsettling picture of the increasing likelihood of a second civil war in the United States.

Could the tech industry's complex algorithms support people during their darkest times, rather than just deliver targeted ads? Drawing from his own experience with depression, global mental health researcher Sandersan Onie shows how internet search behaviors can provide valuable insights into suicide risk and potentially help save lives by reaching people in a deeply personal way, at a crucial moment.

What happens when human and machine creativity meet? From an AI model trained on classic works to generate a seemingly infinite stream of portraits to a neural network that envisions otherworldly life-forms in impossible detail, media art curator Eileen Isagon Skyers showcases mind-bending art that embraces our increasingly technological future, showing how AI can stretch the scope of human imagination and help create worlds we could never design alone.

In a blistering talk, Nobel Laureate Al Gore looks at the two main obstacles to climate solutions and gives his view of how we might actually solve the environmental crisis in time. You won't want to miss his searing indictment of fossil fuel companies for walking back their climate commitments -- and his call for a global rethink of the roles of polluting industries in politics and finance.

The city of Port Talbot in South Wales is known for a few things: a steel mill, a proudly working class population and a passionate commitment to the arts that produced Hollywood superstars Richard Burton and Anthony Hopkins. In this sweet, personal talk, actor Michael Sheen shares how he was also able to take advantage of all the city had to offer, why he's worried that a change in approach to arts education means that kids now don't get the same kind of chances -- and the steps he's taking to ensure that creative up-and-comers get the support and access they deserve. (With animations by Sam Orams and Sarah Klan.)

Climate action is speeding up -- and we each have the power to push that transformation forward. As the head of the UNFCCC, the UN's entity supporting the global response to climate change, Simon Stiell points to clear social and technological signals that show we're at the tipping points of a green revolution -- and invites us all to apply our unique skills to defending the planet against the catastrophic impacts of the climate crisis.

Experiential artist Lucas Rizzotto was going through a tough breakup, so he did what anyone would do: he built a personal time machine. In a playful talk, he shares how his free-ranging experimentation led to various delightful, unexpected innovations that are changing how people think about the relationship between technology and art. "Technology gives us the tools, but art shows us the way," he says.