Free-floating ocean phytoplankton, often too small to be seen without a microscope, are a big deal. The tiny marine plants consume carbon dioxide and produce half of all the oxygen molecules that people and animals breathe. And, as the base of the ocean food web, they’re nourishment for zooplankton, fish, seabirds and whales. To gain read more NASA technology key to Boss’ exploration of polar phytoplankton dynamics