Taj Mahal is a singer, songwriter, film composer, guitarist, and multi-instrumentalist. Recording and touring for over five decades, he has reshaped the definition and scope o...

Victoria Maizes is executive director of the Andrew Weil Center for Integrative Medicine at University of Arizona, where she is a professor of medicine and public health. A le...

Kenneth Mandl is director of the Computational Health Informatics Program at Boston Children’s Hospital and the Donald A.B. Lindberg Professor of Pediatrics and Professor of B...

Lucy Marcil is a primary care pediatrician and Fellow at Boston Medical Center and an assistant professor at Boston University School of Medicine. She also creates solutions t...

Courtney E. Martin is an author, entrepreneur, and facilitator. She co-founded the Solutions Journalism Network and FRESH Speakers Bureau and has consulted with a wide variety...

Edinah Masiyiwa is executive director of Women’s Action Group, an NGO promoting sexual and reproductive health and rights in Zimbabwe. A gender and reproductive health consult...

Don Mathis is general manager of growth for Comcast NBCUniversal. His team’s focus includes establishing, acquiring, and/or investing in ventures that broaden the company’s of...

Sarkis Mazmanian is the Luis & Nelly Soux Professor of Microbiology at the California Institute of Technology and an investigator for Heritage Medical Research Institute. His...

Mariana Mazzucato is a professor in the Economics of Innovation and Public Value and founder and director of the Institute of Innovation and Public Purpose at University Colle...

Nora McInerny is a writer, storyteller, and creator. A reluctant grief expert, she miscarried her second baby, lost her father to cancer, and lost her husband, Aaron, to a bra...

Courtnee Melton is a policy analyst for The Sycamore Institute, a nonpartisan public policy research center in Tennessee. In this position since 2016, Melton is responsible fo...

Miriam Merad s the Mount Sinai Endowed Professor in Cancer Immunology, director of the Precision Immunology Institute at Icahn School of Medicine (PrIISM), co-director of the...

Pat Mitchell is editorial director, curator, and host of TEDWomen, which she co-founded in 2010. She is co-chair of the Women’s Media Center and received its first Lifetime Ac...

Kapil Mohabir is founder, partner, and head grower of Plympton Farms, the largest grower, aggregator, and processor of chili peppers in the Caribbean. Prior to this, he was di...

Catherine Mohr is vice president of strategy at Intuitive Surgical and president of the Intuitive Foundation. She evaluates new technologies and studies the dynamics of emergi...

Brenda Moore is founder and executive director of Kids Educational Engagement Project (KEEP) in Liberia. During the 2014 Ebola outbreak, when public schools were closed and ch...