Popular Science says the University of Minnesota's Christy Haynes is one of ten young researchers whose innovations will change the world.
Haynes studies platelets. They circulate in the bloodstream and help control clotting but are much smaller and stickier than other blood cells, making them harder to study.
Here's a video of a presentation by Haynes and fellow chemists at St. Paul's West Seventh Community Center on World Chemistry Day:
That trip was in 2009 but the visits to the community center have become an annual event, which was held again this summer.