Cool Science Radio welcomes guest Edward Posnett who has written Strange Harvests: The Hidden Histories of Seven Natural Objects . Posnett journeys to some of the most far-flung locales on the planet to bring us seven wonders of the natural world: eiderdown from Scandinavia, sea silk from Sardinia, vicuña wool and guano from Peru, civet coffee from Indonesia, vegetable ivory from Ecuador, and edible birds’ nests from Borneo.