The Latest Breaking News from asthma

Real Christmas trees like the Cypress and the ever-popular Pine can collect a high amount of pollen from other plants before they are cut down - leading to people's ill health.

Three La Niña weather events in a row create the perfect storm for extreme pollen production never before seen in the "hay fever capital of Australia".

PHILADELPHIA — About 21 percent of Philadelphia children suffer from asthma, more than double the national rate. That's more than 1 out of 5 kids citywide, according to Penn Medicine researchers, with the highest rates of childhood asthma in North, Northeast, and West Philadelphia neighborhoods.

PHILADELPHIA — Raspy cries and barky coughs echoed across the emergency room at St. Christopher's Hospital for Children on a recent chilly morning in North Philadelphia. Kids had just started to stream into the waiting room, yet every available bed was already filled.