We all want to put our money toward saving the environment, and luckily, there are many organizations to choose from that are doing just that. The unfortunate reality is that it can be really hard to tell where your donations are actually going—and whether or not they’re making an impact. This week, Chris Vargas, a Silicon Valley-based tech entrepreneur and the founder of ReWorld, is sharing the surprising truth about what goes on behind the scenes at some of these environmental organizations and how to ensure your dollars are being well-spent.