Keep your bitcoin close and your botany closer

A treasure-themed episode for you this week: the natural treasures of Poland's ancient Białowieża forest, hidden treasures in rural France, and buried treasure on a German island. Dominic's been chatting to Agata Szafraniuk of environmental lawyers ClientEarth about their battle with the Polish government to protect Białowieża, one of the few remaining patches of the primeval forest that covered Europe 10,000 years ago. Also heading into the countryside are Parisian podcaster Oliver Gee of The Earful Tower fame and his fiancee Lina Nordin, on a quest to discover the real France through a heart-shaped (awwwwww) tour of the country.

Plus: Strict Belgian gyms, 10th century bling and a bitcoin heist.