I just watched 2020: The Year Of Climate Extremes produced by NBC Nightly News. I live in Northern California, where colleagues lose homes in wildfires described in the second segment. Initially interested in sustainability in the mid-2010s as a source for math applications, I have since become a sustainability advocate on my campus and wrote sustainability modules during a rewarding spring 2020 sabbatical (my first) as a Research Visitor of DIMACS (The Center for Discrete Mathematics and Theoretical Computer Science).
As part of its work on the Mathematics of Planet Earth, DIMACS created a series of sustainability modules for undergraduate mathematics classes, and I worked, in part, on revisions specifically for the community colleges. The modules are intended for wide dissemination and use and cover different topics in sustainability and a range of courses in the mathematics curriculum. While I may not use some of the modules, reviewing them this past weekend gave me a better understanding of the topics and a deeper appreciation of our discipline--both of which I wish to impart to my students.
If you're looking for engaging math applications, to infuse sustainability into the classroom, or student research opportunities, I encourage you to explore the modules.