You know it's important to take care of your physical and mental health. But what about your social health? Social scientist Kasley Killam shows how feeling a sense of belonging and connection has concrete benefits to your overall health — and explains why it may be the missing key to living a longer and happier life.

To spark action on climate change, the conventional wisdom says that awareness must precede action — but neuroscientist Kris De Meyer suggests the opposite is true: actions drive beliefs. He digs into the science behind decision-making and shows how you can rewire your brain to get unstuck on big challenges.

Why do some countries have a seemingly endless supply of talent in certain fields? From Jamaica's sprinters to South Korea's golfers, public policy professor Anirudh Krishna explains why "talent ladders" — structured pathways to identify and nurture people's potential — are the best way to make sure everyone has the opportunity to thrive.

Could the key to a sustainable food system already be growing in the world’s farms? Plant scientist Giles E.D. Oldroyd explores how a special quirk of soybean plants allows them to naturally partner with networks of fungi and bacteria to access essential nutrients in the air and soil — eliminating the need for synthetic fertilizers. He shows how harnessing these microscopic powerhouses could help scientists rewire crops to make their own fertilizer, reducing pollution, increasing yields and improving livelihoods for smallholder farmers.

Money for international development rarely makes it to the people it intends to help, says Faisal Saeed Al Mutar, the founder of Ideas Beyond Borders. Highlighting the inefficiencies of the current system, he proposes a new model for aid that functions like business investments, empowering local entrepreneurs with money to build their communities and create jobs at a fraction of traditional costs. (Created in collaboration with Ignite Talks)

From cosmetics to nutrition, collagen is seemingly everywhere — but we don't often discuss its ethically questionable sources, says chemical engineer Fei Luo. She delves into the groundbreaking technology that uses genetically modified yeast to brew animal-free collagen, a process that could pave the way for a functional, tasty and harm-free future for this crucial protein.

Ending a marriage doesn’t have to mean ending a family, says communication expert Allison O'Brien, who navigated her own divorce without lawyers or mediators. She introduces a framework for ensuring a divorce remains peaceful, supports children and creates a new family dynamic that nurtures everyone involved.

Technology is changing our world — and how we communicate — at an astonishing rate. So much so that entrepreneur Victor Riparbelli predicts that artificial intelligence will drive audio and video to replace text as our primary form of communication by the end of this decade. He imagines a world where anyone can create a Hollywood film, receive personalized education or communicate via hyper-realistic avatars — all in the time it takes to read a book.

Are your goals and resolutions actually holding you back from becoming your best self? Emmanuel Acho — a former NFL player, now an author and TV sports analyst — sits down with investigative reporter David Epstein to explore why goal-setting often backfires. They dive into how letting go of rigid goals and embracing flexibility can spark meaningful growth and help you discover what really drives you forward. (This live conversation was part of a TED Membership event. Visit ted.com/membership to support TED today and join more exclusive events like this one.)

While doom and gloom may wake people up, joy keeps them in the fight, says drag queen and environmentalist Pattie Gonia. With humor, creativity and a dress made of thrifted shower curtains and upcycled pink flamingo pool floaties, Pattie shows why embracing fun might be the key to building a stronger, more inclusive climate movement.