There will be a 1-day symposium held at Caltech on Monday, June 24, sponsored by the International Geobiology Course. The topic of the symposium is “Geobiology of Symbiosis” (see PDF for the detailed schedule). The symposium will be held in the Sharp Lecture Hall on Monday, June 24 starting at 9am. It is open to the scientific public and free of charge. You are cordially invited to attend, either in part or for the entire symposium depending on interest. A continental breakfast and buffet lunch will also be served to symposium participants. If you are interested in participating, please click here to RSVP so that we can plan appropriately for food and drink. If you want to just stop by to hear a speaker or two, please feel free and there is no need to respond.