The Lewes Public Library’s Science and Society lecture series will host Andrew H. Knoll, a Harvard University professor, presenting “A Four Billion Year Conversation between Earth and Life” at 5 p.m., Tuesday, April 7, offered online via Zoom.

The question of how the world came to be is as old as time, from the earth beneath people’s feet to the air they breathe and the life that surrounds them. Geologists propose one set of answers, while biologists suggest another. Knoll will share insights from his new book, “Earth & Life,” arguing that both viewpoints are essential: geological and atmospheric dynamics have sustained life, and life itself has shaped the physical environment. Understanding these interactions can help individuals navigate present-day challenges and aid in the search for life elsewhere in the universe.

To register for the online event, go to tinyurl.com/LPLScienceSpring26 or call the library at 302-645-2733.

The Lewes Public Library’s Science and Society - Making Sense of the World Around Us lecture series is co-organized and moderated by Colin Norman, former news editor at Science; Fred Dylla, executive director emeritus of the American Institute of Physics and author of “Scientific Journeys”; and Lynda Dylla, former public information officer at the Jefferson Laboratory and the U.S. Department of Energy.