Example computer racks to improve environmental sustainability in data centers are disclosed. An example computer rack includes a spine (125); a first set of support structures (500) and a second set of support structures (500) extending from the spine (125). Each of the support structures (500) is positioned to receive a respective blade. A first communication port is carried by the spine (125) and associated with the first set of support structures (500). A second communication port is carried by the spine (125) and associated with the second set of support structures (500).
