Canadian rap artist, writer, and former tree-planter, Baba Brinkman has personally planted more than one million trees in the Rocky Mountains. After graduating with an M.A. in comparative literature in 2003, he began his career as a rap troubadour.

Charles Limb is an associate professor at the Johns Hopkins School of Medicine in the Department of Otolaryngology-Head and Neck Surgery, where he specializes in neurotology and skull base surgery.

Peter Staley has been a long-term AIDS and gay rights activist, first as a member of ACT UP New York, then as the founding director of TAG, the Treatment Action Group. He served on the board of the American Foundation for AIDS Research (amfAR) for 13 years.

Jamie Simmonds is a professionally trained producer, audio engineer, and performer who specializes in hip-hop, theater, and custom projects. He has worked with several record labels such as NTone (Ninja Tune), K7, and Crammed/SSR, as well as major label artists like Alison Goldfrapp, Leftfield, and Pressure Drop.

Tom McFadden is a middle school science teacher by day at The Nueva School in Hillsborough, CA, and a science rapper by night. His YouTube channel, “Science With Tom,” features rap battles between Rosalind Franklin and Watson & Crick.