by Leah Zerbe, online editor for RodaleNews.com Pesky weeds popping up in your yard? Here’s what to not reach for—Roundup. While glyphosate, the active ingredient in America’s favorite weedkiller, Roundup, has been marketed as “safe” and even “biodegradable,” the science is pouring in, and, well, the results are gross. 1. You’re eating it—in “excessive” levels. […]