So, there was a lot of detective work involved. Scientific teams around the world have been studying coastal marshes, taking cores, looking for clues about where things grew, at what times.

因此，涉及很多侦探工作。世界各地的科学团队一直在研究沿海沼泽，采集岩心，寻找有关事物生长地点和时间的线索。