New research reveals that tiny zooplankton in Antarctic waters play a huge role in fighting global warming. Each spring, these microscopic animals gorge on phytoplankton, grow fat, and then migrate deep into the ocean where they slowly burn that stored fat. This natural cycle locks away carbon dioxide for decades, equal to the yearly emissions of about 55 million cars. Scientists say this hidden “carbon pump” is far more powerful than expected, but warming seas and krill fishing could threaten it. Researchers call for better protection of these overlooked ocean heroes to help limit future warming.
