Here's a link to a website that has eco-tourism conferences that include countries from around the world. They had a conference in 2011 that was based on making urban spaces more liveable while protecting biodiversity.  http://www.planeta.com/ecotravel/etour.html

Here's a video about the Ecotourism and Sustainable Tourism Conference in Portland, Oregon from 2010. It has some key points on people's views of eco-tourism.http://www.youtube.com/watch?v=-ifm3TC41Wc&feature=related

This is a comical cartoon about eco-tourism and how the animals would react if they could. http://youtu.be/rb8tLfViFHA