are e cigarettes unsafe? SiOWfa15: Science in Our World: Certainty and Controversy Electronic cigarette Wikipedia PHE: Vaping 95% Less Harmful than Smoking Blog OK Vape Hong Kong still plans e cigarette ban despite new UK study claiming they're 95% less harmful than tobacco South China Morning Post A highly publicised study by Public Health England (PHE) that claimed that e cigarettes are 95 percent less harmful than tobacco has been attacked by medical journal The Lancet for relying on weak