We are researchers at Carnegie Mellon University, working on a project related to "biosensing", "biomarkers" and "bioindicators". We want to know how plants, animals and other organisms can be used to monitor the environment or tell us something about our ecosystem. In the name of science and for fun, please share some examples from your own work or personal experience.

http://staceyk.org/biomarkers/

Thanks in advance for your help!