
Image caption
All of human civilization—everything from the earliest scripts such as cuneiform to smartphones and tweets—has occurred within an interglacial. CC license by Flickr user Ashley Van Haeften / Wikimedia Commons.
All of human civilization—everything from the earliest scripts such as cuneiform to smartphones and tweets—has occurred within an interglacial. CC license by Flickr user Ashley Van Haeften / Wikimedia Commons.