11.   If the offensive pollen is rampant, stay indoors, especially in the morning, when pollen counts are highest.

12.   Pine pollen is too big to go through nasal membranes, and dogwood pollen is spread by bees, not the wind.

13.   Pollen is unlikely to spread on golf courses, executives at Scotts say, because the grass on putting greens is not allowed to flower.

14.   Pollen is among the primary agents responsible for allergic reactions, which happen when allergens enter via the nose, lungs, and eyes.

15.   So pollen is not for mission-critical or sensitive information.

16.   She wants to know how far pollen can travel, how long the pollen is viable and if cloned plants are as strong as cross-pollinated ones.

17.   Some allergies occur only during certain times of the year, such as when mountain cedar pollen is in the air.

18.   The airborne pollen is negative.

19.   The pollen is quite toxic to monarchs exposed to it in the laboratory, but it is not clear whether many of the butterflies encounter it in the fields.

20.   The pollen has been dreadful, so pack your eye drops.