Which best compares the authors' purposes in silent spring and "save the redwoods"?

I am pretty sure that common theme which best compares the author's’ purposes in ‘’silent spring ‘’and "save the redwoods" throughout both stories is the topic about preservation of the environment. Both of this stories persuades to show caring careful attitude towards nature and duty to save the environment. These stories have only one slight difference, to be more exact in ’’silent spring’’ awares us to save the birds whereas the ‘’Save the Redwoods’’ encourages to save the forests.