How effective is modern day youth-led activism? Youth-led environmental movements are a new and very powerful tool for environmental change in the 21^st century. Over the last 15 years, we have seen a tremendous increase in youth activism and youth-led movements, especially in response to climate change. This keystone explores youth-led activism and how it has been influenced by social media. Furthermore, this keystone will explore the limits that social media imposes on activism, and how those limits can be overcome.