Calyampudi Radhakrishna Rao, affectionately known as CR Rao, was an esteemed mathematician and statistician whose remarkable contributions have left an indelible mark on various scientific disciplines. Born on September 10, 1920, in Bellary, India, Rao grew up in a large Telugu family, displaying early promise in academics.

Early Education and Academic Pursuits
Rao's academic journey began with a Master's degree in mathematics from Andhra University, followed by a Master's in statistics from Calcutta University in 1943. He then ventured to King’s College, Cambridge, where he pursued his PhD under the guidance of the renowned R.A. Fisher, culminating in a Doctor of Science degree from Cambridge in 1965.

Distinguished Career and Contributions
Rao's illustrious career saw him holding pivotal positions at esteemed institutions such as the Indian Statistical Institute and the University at Buffalo. His groundbreaking work includes seminal contributions like the Cramér–Rao bound and the Rao–Blackwell theorem, which has fundamentally shaped estimation theory. Additionally, his research spanned diverse areas including multivariate analysis, differential geometry, and the development of orthogonal arrays, leaving an enduring impact on statistical science.

Global Recognition and Honors
Rao's influence transcended borders, earning him accolades and honors from around the world. With 38 honorary doctoral degrees from universities across 19 countries and memberships in eight National Academies, his impact on the global scientific community was profound. His role in founding institutions like the Statistical Institute for Asia and the Pacific underscores his commitment to nurturing future generations of statisticians.

International Acclaim and Awards
In 2023, Rao was bestowed with the prestigious International Prize in Statistics, a testament to his unparalleled contributions. Often hailed as the "Nobel Prize of Statistics," this recognition further solidified his status as a living legend in the field. Additionally, he received the India Science Award in 2010 and was nominated for the Nobel Peace Prize in 2013, further underscoring his wide-ranging influence.

Enduring Legacy and Contributions to Society
Beyond academia, Rao's impact extended to fields as diverse as economics, genetics, anthropology, and medicine. His leadership roles in various statistical societies and induction into prestigious halls of fame highlight his dedication to advancing statistical science for the betterment of society. Through his pioneering work, CR Rao has etched his name among the pantheon of great scientists, leaving behind a legacy that continues to inspire generations to come.