Change the Existing Allegiant Airlines. Climate change, infectious diseases, and anthropogenic land cover changes all have significant implications for the industry and require careful consideration and action"> Change the Existing Allegiant Airlines. Climate change, infectious diseases, and anthropogenic land cover changes all have significant implications for the industry and require careful consideration and action" /> Change the Existing Allegiant Airlines. Climate change, infectious diseases, and anthropogenic land cover changes all have significant implications for the industry and require careful consideration and action" />