My friend and graduate school colleague Tom Pfaff of Ithaca College has done a lot of great work on issues related to sustainability. He has a wonderful collection of free resources for instructors at his blog, http://sustainabilitymath.org/.
In particular, you can find sources of real world data for your classes – especially stats, calc, or any QL course. You can also find updates on sustainability issues such as climate change, inequality, the environment, social justice, and more that you can use both to be a more informed citizen yourself and to potentially share with your students.
You can follow Sustainability Math at
http://sustainabilitymath.org
https://twitter.com/SustMath
https://www.facebook.com/SustainabilityMath
