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.
Yellow leaves are often caused by soil that is too dry; the reason soil that is too wet can also cause yellow leaves is that overly wet soil promotes root rot, which destroys the roots so they can't bring water to the leaves, so the leaves get yellow, just as they would if the soil were dry. Written Aug 25, 2015.