and Tata charities donated $50 million for the construction of an executive center at Harvard Business School (HBS). The executive center has been named Tata Hall, after Ratan Tata (AMP '75), chairman emeritus of Tata Sons. The total construction costs have been estimated at $100 million. Tata Hall is located in the northeast corner of the HBS campus, and is devoted to the Harvard Business School's mid-career Executive Education program. It is seven stories tall, and about 155,000 gross square feet. It houses approximately 180 bedrooms, in addition to academic and multi-purpose spaces. The Tata Innovation Center at Cornell Tech is named after Ratan Tata, and mixes academics and industry in a building on the Roosevelt Island campus. The seven-floor structure is meant primarily as a business incubator for students, faculty, and staff,[40] with 70% of the building being commercially leased and 30% devoted to academic space. Tata Consultancy Services is a tenant in the space. Tata Consultancy Services (TCS) has given the largest ever donation by a company to Carnegie Mellon University (CMU) for a facility to research cognitive systems and autonomous vehicles. TCS donated $35 million for this grand 48,000 square-foot building that is called TCS Hall. In 2014, Tata Group endowed the Indian Institute of Technology, Bombay and formed the Tata Center for Technology and Design (TCTD) to develop design and engineering principles suited to the needs of people and communities with limited resources. They gave ₹950 million to the institute which was the largest ever donation received in its history. Tata Trusts under the Chairmanship of Ratan Tata provided a grant of ₹750 million to the Centre for Neuroscience, Indian Institute of Science to study mechanisms underlying the cause of Alzheimer's disease and to evolve methods for its early diagnosis and treatment. This grant was to be spread over 5 years starting in 2014. Tata Group, under the leadership of Ratan Tata formed the MIT Tata Center of Technology and Design at Massachusetts Institute of Technology (MIT) with a mission to address the challenges of resource-constrained communities, with an initial focus on India. Board memberships and affiliations Ratan Tata was the interim chairman of Tata Sons. He continues to head the main two Tata trusts Sir Dorabji Tata and Allied Trusts and Sir Ratan Tata Trust and their allied trusts, with a combined stake of 66% in Tata Sons, Tata group's holding company. He has served