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Rachel Harris

The news about psychedelics tends to focus on clinical trials and lab research. But there’s a long tradition of underground guides working with plant medicines who refer to "unseen beings" and plants as "teachers." Psychologist Rachel Harris talked with many women elders in the psychedelic underground. She calls them "spiritual warriors."

Google maps versus paper maps

The debate among cartographers today is about which is better — a paper map, or a digital one? Cartographer Mamata Akella argues that there are merits and downsides to both.

Anne's mental map.

Bill Limpisathian is a professor of cartography and specializes in a brand new field – map cognition, or how we use and see and think about maps in the brain.

Time may be a fundamental quality of the universe, but physicists still can't explain what time is. That hasn't stopped theoretical physicist Marcelo Gleiser from devoting much of his life to studying the origins of time and the formation of the cosmos.

Physicist Carlo Rovelli travels to the core of a black hole, where the arrow of time reverses and a white hole is born.   

Yuria Celidwen

Yuria Celidwen has a wide-ranging critique of how the modern psychedelic movement is taking shape. She was the lead author of a recent article in Lancet arguing for new ethical guidelines for using psychedelics — what she calls “spirit medicine.”

Maria Sabina

The story of Mazotec healer Maria Sabina is a notorious example of how psychedelic enthusiasts have exploited the knowledge of Indigenous cultures they don’t really understand.

feet

Rae Johnson is a somatic movement therapist and the author of “Embodied Activism.” They say the process of making change is more sustainable when you listen to your body. 

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