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Cigarette filters are the worlds most common form of litter
Editors at the London-based Economist asked Hanna Ross, principal research officer at the University of Cape Town in South Africa, to offer ideas Next Slide Compare taxes paid to smoker surveys While researchers can use many methods, Ross named three
The researchers identified 48 objective features that could be present in the ads, including things like image color, photo type, the presence of male or female characters, the presence of medical equipment, and what type of argument was used
These are the same harmful compounds found in traditional tobacco and are major causes of cancer and cellular damage over time. He adds that many patients arriving at clinics suffer from severe coughing, hoarseness, dark or yellow phlegm, and in some cases have been diagnosed with pre-cancerous lesions on the vocal cords