He was promoted to professor in 1972, became a Herbert G Kayser Chair Professor in 1980 and a CUNY distinguished professor in 1986. Weinbaum married Alexandra Tamara Wolkowicz in 1962 and they have two children, Alys Eve Weinbaum and Daniel Eden Weinbaum. Weinbaum is widely recognized for novel biomechanical models that have changed existing views in such areas as bone fluid flow and mechanotransduction (how bone cells sense mechanical forces), vulnerable plaque rupture (principal cause of cardiovascular death), the role of the endothelial glycocalyx in initiating intracellular signaling, microvascular fluid exchange, revised Starling hypothesis now referred to as Michel-Weinbaum model for capillary filtration, endothelial transport aspects of arterial disease, glomerular-tubular balance in the renal tubule, and bioheat transfer (Weinbaum-Jiji equation for microvascular heat exchange between blood and tissue). In each case he resolved a long-standing “mystery” by discovering either a new structure-such as micro-calcifications in the fibrous caps of vulnerable lesions or leaky junctions for transport of LDL across vascular endothelium- or a new function for a known structure –such as by demonstrating that the glycocalyx on endothelial cells senses the fluid shear stress of the blood flow and transmits it to the intracellular cytoskeleton. He has also proposed a new concept for a high speed train where lift is generated by a giant ski riding on a soft porous material in a channel with impermeable side walls. Weinbaum has been instrumental in the development of the biomedical engineering program at The City College of New York and CUNY. In 1994 he and Stephen C. Cowin established the New York Center for Biomedical Engineering and in 1999 they introduced the new CUNY PhD program in Biomedical Engineering. This led to the creation of the Department of Biomedical Engineering in 2002 and an undergraduate degree program in this field. Weinbaum is widely recognized as a pioneering advocate for women and minorities in science and engineering. As an untenured professor he was almost fired in 1969 for his role in supporting Black and Hispanic students in their takeover of the City College campus in their protest against existing admission policies. In 1977 he established the first summer outreach program at The City College for low income public high school students in science and engineering. In 1988 he received the Public Service Award of the Fund for the City of New York from Mayor Edward Koch for his role in recruiting women and minority faculty and students to the Grove School of Engineering.