Marcelo’s short documentary, in collaboration with Peter McBride and Insignia Films, about a young Navajo leader and a scientist in search of our lost connection to Nature. Produced by Insignia Films, January 6, 2023.

Marcelo joined Latif Nasser, host of the Radiolab podcast series and Netflix’s "Connected: The Hidden Science of Everything" for a live conversation about science skepticism and the need for empirical evidence as a way to keep our society whole. February 11, 2021.

What makes us, as humans, so peculiar? And why do we seek answers to the toughest questions? Marcelo discusses with SophieCo. Visionaires. RT, January 29, 2021.

Marcelo in conversation with FullCycle Managing Director Stephan Nicoleau,The Future, with FullCycle, May 8, 2020

In this recording of a virtual convening, we hear from Marcelo on how Covid-19 is impacting our worldviews and discuss ways to co-create a new world through our individual and collective actions. Synergos, April 15, 2020

Marcelo, experimental psychologist Tania Lombrozo, and physician Gavin Francis analyze the impact of awe and wonder on their own work and on the mindsets of their colleagues carrying out cutting-edge scientific research. The New York Academy of Sciences, February 5, 2020

Marchelo chats with Stefani Ruper about science, the limits of knowledge, and the search for meaning. The Meaning of Everything podcast, January 18, 2019

Marcelo joins David Pakman to discuss a history of the scientific method, how reality can be established objectively, and whether right and wrong can be measured scientifically. The David Pakman Show, March 6-7, 2017.

A four-part documentary in which Oxford physicist Ard Louis and filmmaker David Malone meet scientists, philosophers, and writers to discuss questions about meaning and the nature of the universe. - Why Are We Here? October 2016

Dan Schneider interviews Marcelo about the existence of the multiverse. Cosmoetica, September 9, 2016.

Marcelo appears in the 7-part documentary series exploring how people search for meaning and connection. Oprah Winfrey Network, Marcelo's episode: October 21, 8 p.m.

In "The Island of Knowledge," Marcelo traces our search for answers to some of the most fundamental questions of existence and reaches a provocative conclusion: the main tool we use to find answers – science – is fundamentally limited. 

- Talks at Google
October 15, 2014