DELTA WILLIS searched for fossils alongside Meave and Richard Leakey for The Hominid Gang, Behind the Scenes in the Search for Human Origins, and profiled physicists and paleontologists who draw inspiration from nature in The Sand Dollar & The Slide Rule: Drawing Blueprints from Nature. Willis provided research to Robert Yuhas Productions for the Discovery Channel program "The Power of Music" to be broadcast in 2002, and has lectured at the American Museum of Natural History, New York University, and the Fulbright Institute. Willis has written for Adventure Travel, Audubon, Outside, Natural History, Travel Africa, The New York Times Book Review, and serves as chief contributor to the Fodor's Guide to Kenya & Tanzania. Her photographs have been published in Newsweek, Natural History, and the Sierra Club book, Isak Dinesen's Africa.
She has been interviewed on NPR's "All Things Considered"; "Pulse of the Planet", The Oxygen Network, and NBC-TV. She organizes film and research expeditions, including Stephen Jay Gould's first tour in East Africa, and served as photographer for a London Zoological Society/World Wildlife Fund expedition that led to the establishment the largest nature reserve in Africa. At Survival Anglia Ltd. she was VP, Director of Programs & Press. After 32 years in New York City (and 20 winters on a house boat at the 79th St. Boat Basin;) in 2003 she moved to Swansea, Massachusetts, and acquired a sailboat.