Russia reports a worker at a Siberian plague institute got pneumonia from an unknown cause and diedAssociated PressRussian authorities have quarantined a hospital and are monitoring contacts of an employee at a plague research institute in Siberia who contracted pneumonia of an “unknown” cause. Local state TV said the woman died last week. 3 science-backed ways to help your brain clear out wasteWashington PostIt’s a fact of life: Our cells produce waste, which the body needs to remove to stay healthy