We ended up in a Colombian mine controlled by a drug cartel. By Justin Scheck The death of the minister, Gen. Sadio Camara, a central figure in the country’s military government, comes amid escalating ...

Diseases are abnormal conditions that have a specific set of signs and symptoms. Diseases can have an external cause, such as an infection, or an internal cause, such as autoimmune diseases. A new ...

Abstract: The low enthusiasm for upstream and downstream pollution control is the main factor leading to poor water quality. Optimizing water pollution control strategies for multiple ...