Also during Session 8, linguist John McWhorter shares why the language of texting may be evidence of advanced intelligence, not (as we so often think) the decline of society.

Ajit Narayanan works to help autistic children communicate through the creation of his app, Free Speech. This uplifting talk was from Session 8.

In Session 9, Rose George says it’s time to end the taboo over excrement, and start “talking shit.” So many are without basic sanitation, which leads to disease, and the potential to harness the gas that poop gives off is exponential.

James Lyne, also in Session 9, shares the secret lives of cyber criminals — and what you can do to protect yourself against them.

Anas Aremayaw Anas is an undercover journalist. In Session 9, he gave a peek at how he exposes corruption and uncovers injustice.

In Session 10, Hyeonseo Lee talks about her escape from North Korea and her goal to help North Korean refugees.

Peter Gabriel, Diana Reiss, Neil Gershenfeld and Vint Cerf discuss the prospects of an interspecies internet during Session 10.

Eleanor Longden gave an incredible talk in Session 10, detailing how she came to terms with the voices in her head.

Joshua Prager told the moving story of a car crash that changed him forever, and his search for the man responsible.

Daniel Reisel shares his experience training the brains of psychopaths at Session 11.

In session 12, Dan Pallotta delivered a powerhouse talk asking us to think about more than a charity’s overhead when judging its worth.