This New Scientist article describes what must be the most ambitious gene mapping project to-date. Scientists plan on taking genetic samples from at least 100,000 people from all over the world in an attempt to use genetic markers to track human migrations over the past 10,000 to 15,000 years. Anyone can participate by purchasing a $100 sampling kit (most of the money will go toward funding the project).

The study itself will only use male DNA to create the map, because women just stop and ask for directions.