(first aired March 15, 2017). Nan Evans hosts a return visit from Jonathan White, active marine conservationist, sailor and surfer, and author of the new book “Tides: The Science and Spirit of the Ocean,” and learns about resonance in the second part of a discussion of tides. Closing music is “Riptide,” performed by Laura Veirs.

(first aired March 8, 2017). Host Debaran Kelso expands her conversation with Ron Sikes about assisting wildlife, with a particular focus on nest boxes. Closing music is “Wild Life,” performed by Wings.

(first aired March 1, 2017). Host Nan Evans talks in studio with Dana Africa, retired Seaman, fanatic scuba diver, lover of the underwater world, fighter for the protection of the oceans, and the maker of wonderful underwater photographs and lovely flute music. Closing music is “Dive In,” sung by Built for the Sea.

(first aired February 22, 2017). Host Debaran Kelso interviews in studio wildlife habitat expert Ron Sikes and discusses improving habitat conditions in the backyard.

(first aired February 15, 2017). Host Nan Evans talks via phone with Jonathan White, active marine conservationist, sailor and surfer, and author of the new book Tides: The Science and Spirit of the Ocean, and talks about his quest to better understand tides. Closing music is “Ebb Tide,” performed by Frank Sinatra.

(first aired February 8, 2017). Host Debaran Kelso talks with Christie Lassen of Wild Birds Unlimited in Gardiner in the second part of a discussion about backyard hawks. Closing music is “Peregrin,” performed by Alderwick.

(first aired February 1, 2017). Nature Now founder Kate Dwyer returns as a guest host and talks about the trees of Port Townsend with Debbie Jahnke of the Port Townsend Parks & Rec Tree Advisory Board, plus discusses a Kah Tai Lagoon land donation project with Admiralty Audubon Society president Rick Jahnke. Closing music is “Poplar Grove,” sung by Delta Moon.

(first aired January 25, 2017). Host Debaran Kelso interviews field biologist Patrick Loafman in the KPTZ studio, and discusses 20 years of botanizing in Olympic National Park and a guide he is producing that will identify the plants in the park. Closing music is “Rain,” sung by Patti Griffin.

(first aired January 18, 2017). Host Mary Robson includes new mystery sound, observations and upcoming events in this rebroadcast of a Feb. 2017 discussion about trumpeter swans with naturalist Bob Boekelheide. Closing music is “Swan,” sung by Right Said Fred.

(first aired January 11, 2017). Host Nan Evans welcomes to the KPTZ studio Jim Bodkin, Scientist Emeritus of the U.S. Geological Survey, and finishes their discussion of sea otters off the outer Washington coast. Closing music is “Silent Sea,” performed by K. T. Tunstall.