Quantitative Psychologist Don Hoffman has a head-spinning take on the true nature of reality vs. what our senses report to us. This is a revisitation of our original interview, expanded with lots of new material recorded last week.

Quantum mechanics – and its eerie "Many Worlds" interpretation – are explored in terms that both poets & physicists can appreciate.

The baffling and fascinating mysteries connected to the phenomenon of consciousness are explored in this conversation with the deeply thoughtful science writer, Annaka Harris.

This morning, TED posted a talk I just gave at their annual conference (on 11 days notice!). Kevin Rose interviewed me about my talk for his podcast. I’m posting his interview here as well.

The drug known as Molly, Ecstasy and MDMA may soon get regulatory approved for therapeutic use, thanks to a 34-year campaign waged by Rick Doblin. Rick and I discuss all of this, plus his own unique story.

The drug known as Molly, Ecstasy and MDMA may soon get regulatory approved for therapeutic use, thanks to a 34-year campaign waged by Rick Doblin. Rick and I discuss all of this, plus his own unique story.

The drug known as Molly, Ecstasy and MDMA may soon get regulatory approved for therapeutic use, thanks to a 34-year campaign waged by Rick Doblin. Rick and I discuss all of this, plus his own unique story.

The food allergy epidemic is mysterious, volatile, and growing fast. Kari Nadeau and her Stanford team are trying to halt it.

A rampage killer with a knife can kill a few. With a gun, dozens. With a jetliner, way more. What might future tech enable? In Part Two of our conversation, Naval and I discuss "The Ender."And how to preclude this monstrosity.

Naval & I discuss a horrifying risk. We questioned whether to post this. Might it give someone ideas? Well, the bad guys already HAVE ideas. And cataclysms are only averted if we face them. There’s still time.