There’s more health advice available than ever before — and no easy way to tell what’s worth your time. From biotech breakthroughs to smarter cancer screening, physician Dhruv Khullar and microbiologist Zack Abbott examine what happens when science can change who we are — including the potential of reengineering the human body — and what medicine might look like in 20 years. (Made possible with the support of ZBiotics)

TED Fellow Ryosuke Takashima is the youngest-ever mayor in Japan’s history — but he doesn’t consider himself a politician. His approach to leadership is simple: listen to as many voices as possible (from students to elders) in order to figure out what needs fixing. Hear why he thinks inviting citizens to participate in reforming their own communities is the best way to get things done. (Recorded at TED Fellows Films 2026 on April 14, 2026)

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When monarch butterflies migrate, they produce one of the most iconic wildlife spectacles in the world — and provide us with an important indicator of ecological health, says photographer Jaime Rojo. Telling a story about our relationship to the natural world, he shares his experience photographing these mesmerizing insects deep in their remote mountain habitats in Mexico, diving into the latest research into the mysteries of their multi-thousand-mile journey and sharing how each of us can join the growing movement to protect them.