Professor Yuki Tanaka is one of the world's leading researchers in ocean pollution. Based at Kyoto University in Japan, she has devoted her career to understanding the impact of microplastics on marine ecosystems. Now 58, she is looking ahead to the final chapter of her academic life — and the numbers are remarkable.
When Professor Tanaka retires in 2030, she will have been studying ocean microplastics for 35 years. It is a dedication that few scientists can match. By that same year, she will have been leading her research team for 22 years, guiding dozens of younger scientists through complex fieldwork and laboratory analysis. She will also have been collaborating with international partners — universities and research institutes across Europe, North America, and Asia — for almost 20 years.
Her work has not slowed down in recent years. If anything, it has accelerated. She is currently supervising several PhD students, including Chen Wei, a talented young researcher from Shanghai. By the time Chen Wei defends his thesis in two years, he will have been analysing sediment samples for four years. He will have been working under Professor Tanaka's supervision for five years — a period he describes as transformative.
It is worth pausing to consider the difference between two similar structures. By 2030, Professor Tanaka will have published more than 80 papers — this uses the future perfect to mark a completed total, a countable result. But she will also have been building her knowledge of microplastics for 35 years — this uses the future perfect continuous to emphasise the duration of an ongoing activity, not its completion.
Professor Tanaka says retirement will not mean stopping. "Science," she says, "does not retire. It only moves more slowly." For her, the milestones ahead are not endings — they are simply markers on a much longer road.