Pilot Projects The ongoing and completed pilot projects funded by the Hoffman Program include: 2017 Cohort Chemical Content of Airline Crew Uniforms Assessing Virtual Experience of Indoor Chemical Exposure 2016 Cohort Ribosomal DNA as an Epigenetic Modulator Pulmonary Exposure to Aerosolized Cosmetics Metabolic Diseases Linked to Early Life Pollutant Exposures 2015 Cohort Healthy Green Campus Project Investigation of Airline Crew Health Complaints Before and After New Uniforms DELTA: Do Repeated Pulmonary Exposures to Zinc Induce Sensitization or Adaptation? Breast Milk Exosomes and Mechanisms of Immunotoxicity from PFCs and PCBs Environmental Risk Factors for Autism in Israel