Dr. Christopher Warren is the founder of My Green Butler, a service that helps hospitality firms save costs, improve cash flow, cut carbon, and increase guest satisfaction. He is also co-proprietor of Crystal Creek Meadows in Kangaroo Valley, a UNEP One Planet programme Partner, and Research Fellow at Griffith University where he studies guest behaviour at tourist accommodation. Christopher has focused on sustainable hospitality since 2007 and introduce one of the world’s first carbon calculators for tourism firms; he has won the Ecotoursim Medial in 2010, two Australian national tourism awards in 2010 and 2012, and the Banksia Award in 2018. He completed his Ph.D. in 2018 and now shares scientific findings to help progress responsible sustainable hospitality. He divides his time between clients in Europe and Australia.