This publication presents 15 case studies solicited by ICIMOD during the International Year of Biodiversity 2010. ICIMOD called for case studies from the Hindu Kush Himalayan (HKH) region on initiatives dealing with mountain biodiversity, with a focus on success stories. Twenty-eight case studies were received from most countries in the region. Based on criteria such as content, relevance, and analysis, a panel of ICIMOD experts selected the 15 studies herein for publication, awarding prizes to four of them as well as one 'special mention'.