Korey Capozza travels to Spain for the European Academy of Allergy and Clinical Immunology Congress where she speaks to researchers that are trying to explain the allergy epidemic and what we can do about it. Highlights: Dr. Magdalena Zemelka-Wiacek (Poland) explains microplastics cause inflammation. Tami Landau (Israel) uses “big data” to determine which children will develop eczema, and Dr Thomas Bieber (Germany) accesses the German Biobank to understand why some children go into remission.