Dawnielle Tellez, 29, recently made it onto media company GreenBiz’ 30 under 30 list. The REI sustainability analyst tells Yesh Pavlik Slenk how hard it is to make the outdoor apparel industry more sustainable. She tells us what she learned working at Patagonia; what dolphins and solar panels have to do with hiking pants and backpacks; and how she landed one of the sexiest jobs in corporate sustainability (note: she could paper her walls with rejection letters).