For years, I’ve been teaching one simple concept: Superman is not coming. We have to stop waiting for someone else to come clean up our world and instead, get more involved. Pollution problems persist and toxins are everywhere, stemming from the hazardous wastes of industry and agriculture. But the good news is that we can save ourselves. We just need to get into action! Here are 5 inspiring activists working for change and a few stories that cover some of our biggest environmental issues today.