Short answers, pulled from the story.
The American Geophysical Union took its first breath in December 1919. A committee led by Robert S. Woodward of the Carnegie Institution had defined geophysics as a collection of borderlands just months before.
By 1950 the membership count reached 4,600 scientists. That number grew to 13,000 by 1980 and then doubled again to 26,000 by 1990.
AGU publishes more than twenty peer-reviewed scientific journals alongside its online magazine Eos. The journal Radio Science is co-sponsored by the International Union of Radio Science while Earth Interactions appears in partnership with the American Meteorological Society and the Association of American Geographers.
Until 2017 this event occurred yearly in San Francisco. Renovations forced the 2017 meeting into New Orleans while the 2018 gathering moved to Washington DC before returning to San Francisco in 2019.
The union adopted its first position statement on climate change in December 1998. This statement concluded after discussing scientific uncertainties regarding global warming and was backed up by a detailed supporting document.
On the 22nd of February 2016 a letter signed by 100 scientists requested cutting all ties with ExxonMobil. The AGU Board of Directors met on the 22nd of April 2016 and voted to continue accepting sponsorship from the energy company despite claims that it continued participating in climate misinformation.