Tayler, Hannah, Kaitlyn, and Brian were volunteers for the 2017 Expanding Your Horizons (EYH) program hosted at SIU on Saturday. EYH is a day-camp for girls 5th through 9th grade which exposes them to the many different aspects of STEM. The chemistry program this year discussed the chemistry of light and color, and included demonstrations about fluorescence, and chromatography of fall leaves.