Cartoons and caricatures can are great introductions into topics. They can also serve as a great opportunity for students to apply the knowledge they have acquired in class. Alternatively, these cartoons are also a possibility to incorporate environmental issues into language lessons, since they require students to use their critical thinking and argumentation skills. Many proponents of bilingual education emphasize its great opportunities and possibilities for interdisciplinary learning. Therefore, you might want to ask the English teacher of your class if they are willing to include one of the following cartoons as a writing task or an in-class discussion. A collaboration with a Politics teacher could also be a great idea - as many environmental issues are also political issues.
ConservationBytes is a website by conservation ecologist CJA Bradshaw. His cartoon guide to biodiversity loss focuses provides a great amount of wonderful cartoons that emphasize many conservational issues. To go to a collection of all cartoons, click here.
SeppoNet is a website that features great environmental cartoons. It provides cartoons on current environmental issues, political issues and conservation. The following two cartoons are provided by the courtesy of Seppo Linen.