Robert F. Diegelmann’s research led to a breakthrough in the products used to stop the massive loss of blood in emergencies. In June, the emeritus professor at the VCU School of Medicine donated to the Richmond-based museum a collection of 16 items related to his research into hemostasis. His efforts ultimately led to the discovery of the blood-clotting properties of sodium bentonite, an absorbent clay often found in kitty litter. Read more.