Stephen McIlwaine has been based in Amman, Jordan for 10 years, working mostly on projects and studies related to water and the environment. He is Director of CSBE, a Jordanian study center with wide ranging interests in sustainable and appropriate solutions related to the built environment. Mark Redwood worked for 10 years on urban agriculture and wastewater use issues. Authored several publication related to this, and managed a large portfolio of projects on greywater and wastewater use in general. He has also presented at several international events on the topic of wastewater use - Stockholm World Water Week and the World Urban Forum.