Luis Castilla, Lead Producer and On-Air Host (Spanish), came from Mexico City in fall 2010 especially to work with EarthSky en Español. He oversees the production of our Spanish videos, leads our Spanish-speaking communities on Facebook and Twitter, provides a voice for our Spanish radio shows and interviews scientists in Spanish. Luis has had extensive experience in the broadcast world, having produced for a wide range of clients, including the Office of the President of Mexico. His experience in post-production includes commercials and audience analysis for major networks like Televisa and Grupo Siete. Luis taught Radio and Television courses at Universidad del Nuevo Mundo and voiced radio and television ads for major companies such as Ford and SEGOB. Having lived in the U.S. and Canada for extended periods of time, Luis is empowered with a full bilingual and bicultural experience that enables him to better understand the complex needs of the EarthSky en Español audience.