Speaker - Elizabeth Sibert, Assistant Scientist, Woods Hole Oceanographic Institution. Ocean Discovery Lecture. Topic - A microfossil history from the bottom of the sea: sharks, fish, mass extinctions, and 85 million years of global change Abstract - Fish are the most diverse group of vertebrates on the planet today, and the type and abundance of…

Speaker - Tim Conway, Associate Professor, University of South Florida. Hosted by Nicholas Meskhidze and Douglas Hamilton. Topic - Un-muddying the waters: using iron isotopes to investigate the sedimentary dissolved iron source Abstract - After twenty years of the International GEOTRACES program, marine sediments are now firmly established as important (local) sources of dissolved Fe…