Botanist Robin Wall Kimmerer writes that naming a plant is only the beginning. Understanding its relationships to pollinators, ecosystems and people is where deeper knowledge begins. SOS 100: Introduction to Sustainability at Arizona State University helps you build a systems-level understanding while opening a flexible path toward college credit and a career.

Arizona high school learners who took the ACT this spring have a direct path to earning widely transferable college credit from ASU — with simple enrollment, no risk to their transcript and a partner rate.

Whether you’re a high school student, working adult or lifelong learner, ASU’s Universal Learner Courses offer flexible, faculty-led online classes for $25, with optional credit added only if you choose.