Dr. Sylvia Earle, National Geographic Explorer-in-Residence: Exploring the Ocean in the 21st Century April 30 || 4 p.m. “Exploring the Ocean in the 21st Century,” a lecture presented by Dr. Sylvia Earle. Sylvia Earle is President and Chairman of Mission Blue/The Sylvia Earle Alliance. She is a National Geographic Society Explorer in Residence, and is read more Upcoming Lecture: Dr. Sylvia Earle