Marine biologist Nancy Knowlton knows the wonders of our oceans and the weird and wondrous creatures that call it home. She also recognizes how ocean life is threatened by human activity and what is being done to turn the tide of destruction. Knowlton’s talk is the kickoff event of Conserving Our Dynamic Planet, a series presented by the Smithsonian Institution and co-sponsored by the Linda Hall Library. Knowlton holds the Smithsonian Institution’s Sant Chair for Marine Science.