hey guys welcome to techknow i'm phil torres joined by lindsay moran and marita davidson. this upcoming episode is an important one to me it takes place in peru where i've done alot of my research and it is a tale of contrast we will see a rainforest full of new species and then we will see the devastation that humans have done to extract gold. >> and as we know with devastating stories like this, where there is a lot of damage science can play a role here not just in monitoring and discovering what's going on but in trying to help process. >> i think this is a story having looked at some of the images that one image of the devastation pretty much says it all. >> absolutely, this is an important story it's one that is very near and dear to my heart and it starts in the peruvian rainforest. the amazon rainforest for more than 50 million years it's been a cradle of life. this is what pristine rainforest looks like. lush, untamed, bursting with wildlife. but maybe not for long. because the soil underneath is laced with gold. and the human desire for it can turn all of this...