Servo is an experimental web browser engine for modern multi-core hardware. It is attempting to parallelize all parts of the web stack at a much finer level of granularity than is currently done in other browsers. Browser security is also incredibly important, so Servo is also being written in Rust, a new memory-safe systems programming language. I'll talk about Servo's goals, it's design, and how Rust helps in achieving these goals. I'll discuss where it is possible to get more parallelism in the browser, and some of the Servo team's ideas for achieving it.