American Geophysical Union | 32,731 followers on LinkedIn. AGU is a global community supporting more than half a million advocates and professionals in Earth & space sciences. | AGU is a global community supporting more than half a million advocates and professionals in Earth and space sciences. Save the Date for #AGU26 in San Francisco, CA, 7-11 December, 2026. Through broad and inclusive partnerships, AGU aims to advance discovery and solution science that accelerate knowledge and create solutions that are ethical, unbiased and respectful of communities and their values.