Whether we cry during a sad movie, while chopping onions, or completely involuntarily, our eyes are constantly producing tears. Alex Gendler tracks a particularly watery day in the life of Iris (the iris) as she cycles through basal, reflex and emotional tears. 

QUESTIONS: 

1. Why do you think people cry? 

2. What are the three kinds of tears working to keep our balance and healthy? 

3. Has crying ever helped people solve their problems? Explain further.