Explore the fascinating world of high-energy physics in this 50-minute lecture titled "What's Big About Small x" delivered by Raju Venugopalan at the International Centre for Theoretical Sciences. Delve into the concept of small x physics and its significance in understanding the structure of protons and neutrons. Learn about the upcoming electron-ion collider (EIC) at Brookhaven National Lab and its potential to revolutionize our understanding of quarks and gluons. Discover how the EIC will investigate key questions about the distribution of quarks and gluons inside nucleons, the origin of proton mass and spin, and the possibility of gluon saturation in heavy ion collisions. Gain insights into the unprecedented level of detail that the EIC's high luminosity and wide kinematical coverage will provide in probing nucleon structure.