Mainichi Daily News: The blooming season of cherry blossom trees across Japan has become earlier by an average 4.2 days over the past 50 years apparently due to global warming, a study by the Meteorological Agency has found. The survey has also found that the blooming season for camellia trees got earlier by 9.4 days over the past half century, while gingko and maple trees start their leaf-shedding process much later than five decades ago. The agency analyzed the data collected at its local …