The five senses shape all our experience, but we still don't fully understand them. This episode, TED speakers explore how our brains make sense of sensation, and how our minds manufacture "reality." Guests include astronomer Wanda Diaz Merced, geneticist Nicole Garneau, author Isaac Lidsky, zoologist Tristram Wyatt and neuroscientist David Linden. (Original broadcast date: January 20, 2017.)

From bullying to hate crimes, cruelty is all around us. So what makes us hate? And is it learned or innate? This hour, TED speakers explore the causes and consequences of hate — and how we can fight it. Guests include reformed white nationalist Christian Picciolini, CNN commentator Sally Kohn, podcast host Dylan Marron, and writer Anand Giridharadas.

From bullying to hate crimes, cruelty is all around us. So what makes us hate? And is it learned or innate? This hour, TED speakers explore the causes and consequences of hate — and how we can fight it. Guests include reformed white nationalist Christian Picciolini, CNN commentator Sally Kohn, podcast host Dylan Marron, and writer Anand Giridharadas.

Networks surround and sustain us, in nature, in our bodies, in relationships, in the digital world. This hour, TED speakers explore how we rely on networks and how we have the power to shape them. Guests include ecologist Suzanne Simard, UPS executive Wanis Kabbaj, computer scientist Avi Rubin and anthropologist Robin Dunbar. (Original broadcast date: January 13, 2017)

Networks surround and sustain us, in nature, in our bodies, in relationships, in the digital world. This hour, TED speakers explore how we rely on networks and how we have the power to shape them. Guests include ecologist Suzanne Simard, UPS executive Wanis Kabbaj, computer scientist Avi Rubin and anthropologist Robin Dunbar. (Original broadcast date: January 13, 2017)

Are grit and perseverance enough to succeed? Or does someone need to give you a chance? This hour, TED speakers explore why some are overlooked despite their talents, and how that can begin to change. Guests include recovering politician Jeff Smith, human resources expert Regina Hartley, sociologist Victor Rios, arts curator and activist Malika Whitley, and middle school principal Pearl Arredondo.

Are grit and perseverance enough to succeed? Or does someone need to give you a chance? This hour, TED speakers explore why some are overlooked despite their talents, and how that can begin to change. Guests include recovering politician Jeff Smith, human resources expert Regina Hartley, sociologist Victor Rios, arts curator and activist Malika Whitley, and middle school principal Pearl Arredondo.

Some scientists say we're in a new geological age where humans are having an unprecedented impact on Earth. This hour, TED speakers ask what this means for the future of our planet, and our species. Guests include paleontologists Kenneth Lacovara and Peter Ward, environmental writer Emma Marris, and biodiversity archivist Cary Fowler. (Original broadcast date: September 30, 2016.)

Some scientists say we're in a new geological age where humans are having an unprecedented impact on Earth. This hour, TED speakers ask what this means for the future of our planet, and our species. Guests include paleontologists Kenneth Lacovara and Peter Ward, environmental writer Emma Marris, and biodiversity archivist Cary Fowler. (Original broadcast date: September 30, 2016.)

Over the course of our lives, we shed parts of our old selves, embrace new ones, and redefine who we are. This hour, TED speakers explore ideas about the experiences that shape the person we become. Guests include aerobatics pilot and public speaker Janine Shepherd, writers Roxane Gay and Taiye Selasi, activist Jackson Bird, and fashion executive Kaustav Dey.