Prof Yasuyuki Aono’s meticulous work charted shifting bloom dates as a marker of climate change Prof Yasuyuki Aono’s meticulous work charted shifting bloom dates as a marker of climate change E ven in his final months, he counted the days until the cherry blossoms. Prof Yasuyuki Aono of Osaka Metropolitan University spent his career gathering data on the spring flowering dates of cherry trees in Japan in what is one of the world’s longest climate records tracking a seasonal occurrence. Using