On Oct. 14 the University of Louisville’s Green Heart Project started planting 8,000 trees in South Louisville to study effects of plants on human health. This is one of the largest tree and shrub planting projects in U.S. history. “This is a Green Heart Project and in this project we are trying to study what effect vegetation and trees might have on the health of a community,” said Aruni Bhatnagar, director of the Christina Lee Brown Envirome Institute at U of L. “Our primary objective is to understand how increasing greeness effects the risk of heart disease in the community.”