For older or more advanced students, consider this lesson where students write to their energy minister.
This activity helps students create a personal connection to climate change and to helping the planet. The sources provided are excellent, and the children's book in the activity is accurately written. This resource is recommended for teaching.
Common Core English Language Arts Standards (CCSS.ELA)
CCSS.ELA-LITERACY.W.1.1 Write opinion pieces in which they introduce the topic or name the book they are writing about, state an opinion, supply a reason for the opinion, and provide some sense of closure.
CCSS.ELA-LITERACY.W.3.1 Write opinion pieces on topics or texts, supporting a point of view with reasons.