is smoking 5 cigarettes a day bad No Safe Level of Smoking One Pack of Cigarettes

Chewing tobacco has been clearly linked to higher rates of mouth cancer, gum disease, tooth loss, and long-term oral health damage

Lorillardalong with Philip Morris, formed the oligopoly that would oversee the 20th-century boom in cigarette smoking

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Photo credit: Lisa Densmore Ballard The verdict is still out on whether a campfire alerts animals to your presence

This secretive system of transporting slaves from safe house to safe house, helping them escape to free states or Canada, operated for years with Harriet Tubman, a former slave, as one of its leading figures

Microplastic removal by Red Sea giant clam (Tridacna maxima)