An image from an electron microscope shows a type II alveolar cell, found in the air sacs of lungs. In the cell's cytoplasm (pink) are lamellar bodies (purple), which contain surfactant.
The U.S. Senate narrowly confirmed Scott Pruitt as administrator of the EPA in 2017. It was the latest step in a political career that has focused in large part on faith-based issues.
J. Scott Applewhite/AP