Natural gas pipeline marker at sunset near the brow of a hill. A warning label gives numbers to call in an emergency. Photographed in July 2014, at Ryerson Station, Pennsylvania, USA. (KEYSTONE/SCIENCE PHOTO LIBRARY/JIM WEST/SCIENCE PHOTO LIBRARY)
Our website uses cookies. By using and navigating through the website and its offers, you accept these cookies. Detailed information about the use of cookies and how to delete them can be found in our data privacy statement.
