# SC 2015 Photos - Day 4 (lectures and semilabs)

Here are photos from lectures and semilabs of day 4 (Thursday). On this day, we had the following lectures:

- Pavel Etingof – How many ways are there to paint a dodecahedron?
- Igor Zaliznyak – Who really invented calculus? Archimedes!
- Lawrence Hobbie – GMOs: Should we fear them or embrace them?
- Vicka Bershadsky – Power of Illusion