5 p.m, ONLINE. The Lewes Public Library’s Science and Society lecture series will welcome wildlife ecologist Dr. Christopher Heckscher for an online conversation about his work tracing firefly populations on the East Coast, including his discovery of new species. To register for the online event, go to https://delawarelibraries.libcal.com/event/11665459 or call the library at 302-645-2733.