They’re young and they want to see the world. They come to places like Koh Phangnan to “experience local culture,” take a lot of drugs and trash the once-pristine beaches. Never before has so much of the planet’s places and people been available for discovery to someone with a backpack and a little travel money. But is there any responsibility for the impact of all of this casual travel? Here’s a trailer for “Gringo Trails,” a documentary film which “raises urgent questions about how we travel and the unintended cultural and environmental consequences of tourism around the globe,” according to its description.

