For most people, mosquitoes are very unwelcome.  They can also carry dangerous diseases like the zika virus and malaria.   Dr. Roberto Perreira has invented a simple mosquito water trap that doesn’t contain pesticides.  Born and raised in Brazil, Pereira had no interest in insects as a kid.  He went into entomology “through the back door” in graduate school by focusing on diseases that kill insects.  Naturally he was drawn to swampy Florida where he specializes in “urban entomology.”