Science Café Stellenbosch is an initiative of SU’s Faculty of Science, with well-known environmentalist Dave Pepler as moderator. Ever heard of the Southern Ocean, the world’s youngest ocean? Where is the Southern Ocean and why should we care about phytoplankton in the struggle against climate change? This is just one of many questions Dave Pepler will put to Alakendra Roychoudhury about the vast and stormy patch of ocean stretching uninterrupted from the farthest tip of the African continent to Antarctica. Alakendra is professor in marine and environmental biogeochemistry in the Department of Earth Sciences at SU.