We're living in a time of intense ideological division, and it often feels impossible to bridge the gap. But can we afford not to? This hour, TED speakers explore how to communicate across the divide. Guests include social media activist Megan Phelps-Roper, social psychologist Robb Willer, former Norwegian Foreign Minister Jonas Gahr Støre, public radio host Celeste Headlee, and Rabbi Jonathan Sacks.

We think we're the ones who control what we see, read, think — and remember. But is that true? Who decides? And who should decide? This hour, TED speakers reveal just how easily we can be manipulated. Guests include design ethicist Tristan Harris, MSNBC host Ali Velshi, psychologist Elizabeth Loftus, and neuroscientist Steve Ramirez.

We often think that scientific research is reserved for PhDs and other experts. But now that's changing. This hour, TED speakers on how ordinary citizens are helping make groundbreaking discoveries. Guests include tech entrepreneur Joi Ito, biomedical researcher Sharon Terry, astronomer Tabetha Boyajian, and journalist Mary Ellen Hannibal.

From data collection to gene editing to AI, what we once considered science fiction is now becoming reality. This hour, TED speakers explore the future consequences of our present actions. Guests include designer Anab Jain, futurist Juan Enriquez, biologist Paul Knoepfler, and neuroscientist and philosopher Sam Harris.

How much of who we are is biology? How much is learned? And how much can we change? This hour, TED speakers on how genes and experience collaborate — and compete — to make us who we are. Guests include neuroscientist Robert Sapolsky, epigeneticist Moshe Szyf, pediatrician Nadine Burke Harris, and psychologist Brian Little.

For most of modern history, humans have placed smaller humans in institutions called schools. But what parts of this model still work? And what must change? This hour, TED speakers rethink education.TED speakers include teacher Tyler DeWitt, social entrepreneur Sal Khan, international education expert Andreas Schleicher, and educator Linda Cliatt-Wayman.