How a science program teaches girls to stop doubting themselves

This post is part of Mashable's ongoing series The Women Fixing STEM, which highlights trailblazing women in science, tech, engineering, and math, as well as initiatives and organizations working to close the industries' gender gaps.With patience, Emily Cruz detangled a vine with Dorito-shaped leaves from a fallen branch, unwinding it slowly and then pulling it out from the roots.
The 12-year-old and 40 other middle-school girls were working to remove what’s known as mile-a-minute vines re