And that's how a thunderstorm off the coast of India might trigger a pattern of events which led to the weather switch last spring.

BBC: Met Office three-month forecast was 'not helpful'

John's fourth-grade class in a suburb of Chicago recently invited Ms. Rudnicki to consult with the planning committee for a spring fair to help select refreshments that won't trigger John's allergies.

WSJ: Finding Food Allergy Allies