Expo '70 refers to the World's Fair that took place in Osaka, Japan, in 1970. Professor Sudakar Nadkarni, who is connected to IDC and IIT Bombay, played a significant role in this exposition. He was involved in presenting India's contributions to innovation and design on a global scale. The exhibition featured a number of displays showcasing Indian innovations, technology, and culture. Prof. Nadkarni's work at Expo '70 was instrumental in bringing global recognition to Indian design and setting the stage for future international collaborations and exhibitions.