Don’t let the Pennycress plant’s wimpy name fool you — this flowery little plant is known as a “hyperaccumulator,” which can suck up toxic amounts of heavy metals and help clean up polluted land.

Intro theme and various sound effects by Adam Dylewski; music by DoKashiteru (via ccMixter.org); Creative Commons licensed audio from freesound.iua.upf.edu includes sound by Justine Angus, thanvannispen, cognito, dobroide, Erdie, theta4, belloq, Connum, mikejedw and batchku.