Coal is currently the largest source of global energy. When coal is burned, its carbon, hydrogen, oxygen, sulfur, nitrogen and trace metals combine to form greenhouse gases such as carbon dioxide, methane and nitrogen oxides. Other emissions include sulfur dioxide…

Much of Appalachia is predicted to experience increased temperatures and precipitation over the coming decades, with temperatures rising by four to nine degrees Fahrenheit and fewer — but more intense — storms interspersed with short droughts. Heat impacts Rising temperatures…

Whether in food, water or air, current research suggests that no corner of the global environment is spared from pesticide contamination — not even the bacteria and fungi needed to regenerate soil. Pesticides include popular products such as insecticides, herbicides,…

The last decade has seen a rapid expansion of the drilling method known as hydraulic fracturing, or fracking. Sand and chemicals — including known carcinogens — are mixed with water and injected deep underground to extract natural gas from shale…