Complex sentence: Geophysicist Marcia McNutt became editor-in-chief in June 2013, and during her tenure the family of journals expanded to include "Science Robotics" and "Science Immunology", and open access publishing with "Science Advances".
Split into simpler sentences: Geophysicist Marcia McNutt became editor-in-chief in June 2013. During her tenure the family of journals expanded to include "Science Robotics" and "Science Immunology", and open access publishing with "Science Advances".