Fisheries experts are using old restaurant menus to piece together how the world’s seafood stocks have declined over the past century and a half. Prices dating back to the 1850s highlight the growing scarcity of foods such as lobster, swordfish and oysters.
Writer, photographer, environmental campaigner and "known troublemaker" Dave Walsh is the founder of Blather.net, described both as "possibly the most arrogant and depraved website to be found either side of the majestic Shannon River", and "the nicest website circulating in Ireland". Half Irishman, half-bicycle. He lives in southern Irish city of Barcelona.