1. Mammalian cell cycle regulation / Rajat Singhania, R. Michael Sramkoski, James W. Jacobberger, and John J. Tyson -- 2. Spindles and active vortices / David A. Head, W. J. Briels, and Gerhard Gompper -- 3. Actomyosin-dependent cortical dynamics / Patrizia Sommi, Dhanya Cheerambathur, Ingrid Brust-Mascher, and Alex Mogilner -- 4. Filament depolymerization during bacterial mitosis / Edward J. Banigan, Michael A. Gelbart, Zemer Gitai, Ned S. Wingreen, and Andrea J. Liu -- 5. Actin ring constriction / Alexander Zumdieck, Karsten Kruse, Henrik Bringmann, Anthony A. Hyman, and Frank Julicher -- 6. Curved activators and cell-membrane waves / Barak Peleg, Andrea Disanza, Giorgio Scita, and Nir Gov -- 7. Actin waves and phagocytic cup structures / Gunther Gerisch -- 8. Yeast and scaling / Daniel Riveline -- 9. Cellular shapes from protrusive and adhesive forces / Roie Shlomovitz, Kathrin Schloen, Theresia Stradal, and Nir S. Gov -- 10. Amoeboid cells' protrusions / Peter J. M. Van Haastert -- 11. Collective cell migration / Masataka Yamao, Honda Naoki, and Shin Ishii -- 12. Differential adhesion and cell sorting / Ying Zhang, Gilberto L. Thomas, Maciej Swat, Abbas Shirinifard, and James A. Glazier.