Cameron M, Smith is an archaeologist  who has become involved in the study of spaceflight and space settlement. He has become known in the space blog-o-sphere for his DIY space suit projects (see a list of posts here). Below is a video of a lecture he gave recently for the Public Lecture Series at the Perimeter Institute for Theoretical Physics in Waterloo, Ontario, Canada. The lecture was titled, Interstellar Voyaging: An Evolutionary Transition :

The discovery of countless exoplanets and new ideas in propulsion physics have resurrected international interest in the ancient concept of humanity traveling far beyond Earth. Such voyages will take place over many generations, requiring careful attention to both biological and cultural change over time. In this talk Cameron Smith will outline the foundations of a biocultural science of long-term space settlement.