Greg Child (born 12 April 1957) is an Australian-born rock climber, mountaineer, author and filmmaker. He has authored several books: Thin Air: Encounters in the Himalayas, Mixed Emotions: Mountaineering Writings of Greg Child, Postcards from the Ledge, Over the Edge and Climbing Free (co-authored with Lynn Hill), and has written numerous magazine articles for "Outside", "Climbing", "Rock and Ice" and "Men's Journal". In 1987, Child was honoured with the American Alpine Club's Literary Award for his prolific and insightful mountaineering literature. In 2011 Child was president of the jury for mountaineering's coveted Piolet d'Or. Source: Wikipedia (en)