Edit. After Black September's assassination of Israeli athletes at the Munich Olympics in 1972, Prime Minister Golda Meir okays a black-box operation to hunt down and kill all involved.
Yellow pollen is produced by evergreen trees, primarily pine trees, including spruce, true cedar trees, fir trees, larch and hemlock. Although yellow pollen looks like it could cause an allergic reaction, in reality it does not trigger allergy symptoms at all. It can stain the skin and clothing, however.
Verticillium Wilt. Most species of maple are susceptible to Verticillium wilt, and vine maple is no exception. The disease, caused by fungal pathogens, causes foliage to yellow and brown before it shrivels up and drops prematurely from the tree. The disease eventually becomes evident on entire sides of the tree.