The 100 tampons NASA (almost) sent to space -- and other absurd songs | Marcia Belsky

From the return of nomadic living to a climate-disrupted world, author and global strategist Parag Khanna has some predictions for humanity. Get a fascinating glimpse at the future as he tackles an urgent question: Where on Earth will eight billion humans live in the uncertain times ahead? (This conversation, hosted by TED current affairs curator Whitney Pennington Rodgers, was part of an exclusive TED Membership event. Visit ted.com/membership to become a TED Member.)

13 Heinä 202218min

"Climate doom-ism," or a pessimistic outlook on the future of the planet, rivals climate denialism in holding up the fight against climate change, says activist Zahra Biabani. Illuminating how hope combats inaction, she takes us inside the world of eco-friendly content on TikTok -- and shows that we all have what it takes to make real change.

12 Heinä 20229min

The universe that we know, with its luminous stars and orbiting planets, is largely made up of elements we can't actually see -- like dark energy and dark matter -- and therefore don't fully understand. Theoretical physicist Chanda Prescod-Weinstein takes us inside the search for this cosmos-shaping invisible matter and explains how, with the help of a new generation of telescopes, we could be closer to demystifying it than ever before. "The universe is more queer and fantastical than it looks to the naked eye," she says. (If you want to hear more from Prescod-Weinstein, check out her episode on "The TED Interview" podcast.)

11 Heinä 202214min

Sharing his experience of being held captive in a Taliban prison for 105 days, humanitarian Safi Rauf talks about his life's mission to get food, medicine and other critical supplies to Afghans in need -- and urges the world to bolster aid and establish a peaceful presence in the country during these extraordinarily difficult times. (This talk was recorded on April 12, 2022)

8 Heinä 202210min

What would Immanuel Kant say about a fender bender? In a surprisingly funny trip through the teachings of some of history's great philosophers, TV writer and producer Michael Schur (from hit shows like "The Office" and "The Good Place") talks through how to confront life's moral dilemmas -- and shows how understanding ethical theories can help you make better, kinder decisions.

7 Heinä 202211min

Where did all the lumps and bumps on buildings go? When did city architecture become so ... dull? Here to talk about why cities need inspiring architecture, designer Thomas Heatherwick offers a path out of the doldrums of urban monotony -- and a vision of cities filled with soulful buildings that people cherish for centuries.

6 Heinä 202215min

During the Soviet Union era, therapy was often used as a tool of political oppression. Since then, Russia has seen major reforms in mental health care -- but stigmas and distrust for the practice still live on. Psychologist and TED Fellow Olga Kitaina shares the current state of therapy in Russia (where tarot card readers and astrologers sometimes pass as psychoanalysts) and outlines her solution for getting people the professional help they need.

5 Heinä 20225min

The world needs clean power, but decarbonization calls for a massive increase in the mining and extraction of minerals like lithium, graphite and cobalt. Environmental peacemaking expert Olivia Lazard sheds light on the scramble for these precious mineral resources -- and how the countries that control their supply chains (including China and Russia) could find themselves at the center of the new global stage. Learn why Lazard thinks planetary security depends on our ability to de-escalate resource competition and avoid the same mistakes that led to the climate crisis.

4 Heinä 202217min