The application for the California State Summer Program for Mathematics and Science (COSMOS) is now open. COSMOS is an intensive four-week summer residential program for students who have demonstrated an aptitude for academic and professional careers in science, technology, engineering and mathematics (STEM) subjects. Talented and motivated students completing grades 8-12 have the opportunity to be mentored by renowned faculty, researchers and scientists in state-of-the-art facilities, while exploring advanced STEM topics far beyond the courses usually offered in California high schools. Through challenging curricula that are both hands-on and lab intensive, COSMOS fosters its students’ interests, skills, and awareness of educational and career options in STEM fields.