We have the pleasure of welcoming Ralph Keeling, Professor of Geochemistry in the Geosciences Research Division of Scripps Institution of Oceanography, as the EPS Visiting Scholar from April 2-4, 2018. Prof. Keeling will give the EPS Colloquium on Monday, a lecture on Tuesday, and will host a round table on Wednesday. Details are listed on the webpage. All events are open to the EPS community.