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Supertall buildings have become just another part of the urban scenery. They are, writes science fiction writer Bruce Sterling, “stunningly factual, immediately obvious, impossible to overlook.” But what of the unbuilt towers of the future? What might *they* look like. With his customary lyricism, Sterling describes four classes of future skyscraper.

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Pope Francis’ recent Encyclical has been widely praised for supporting the science on climate change. But as Johan Rockström, who’s been involved in high level discussions between scientists and the Vatican explains, the story of how the Pope has integrated science and religion represents a profound shift in world view.

Linda Cliatt-Wayman has spent her career working in low-income, low-performing schools. She has developed a thick skin and a tough attitude … laced with fierce love for her students. Here, she shares her approach to fixing a broken system and doing right by kids who deserve the best.

Formula E, the world’s first fully electric racing series, has cars that swish rather than scream — and all the drivers drive the same design of car. Driver Nicolas Prost shares the secrets behind a very modern contest.

People are living longer thanks to improvements in healthcare, nutrition and technology. This population shift brings with it incredible possibilities — but also a new set of challenges. So … How do we care for our elderly?

From left to right: Dylan Geil, Denise Kahler, Daniel Kish and Christine Sun Kim.  Photo by Ryan Lash/TED.

Artist and TED Fellow Christine Sun Kim, deaf since birth, talks with Daniel Kish, who lost his sight to cancer aged 13 months, about sound and sound “etiquette.”

The reasons why women and people of color are not pursuing computer science jobs are complicated. Robin Hauser Reynolds, director of a documentary looking at the gender gap, shares four reasons women don’t seem to flourish in the tech world — and proposes some solutions.