I hope they do research and plant a variety of trees in sustainable ways that do not affect people negatively. https://en.m.wikipedia.org/wiki/Hay_fever_in_Jap

I hope they do research and plant a variety of trees in sustainable ways that do not affect people negatively. https://en.m.wikipedia.org/wiki/Hay_fever_in_Japan https://en.m.wikipedia.org/wiki/Hay_fever_in_Japan