Hi, welcome to my site!

My name is Niranjana Krishnan and I obtained my PhD in toxicology at Iowa State University. I am currently an Assistant Professor at the University of Maryland, College Park (you can read about my work here). I enjoy learning about environmental toxicology and I like writing. This website was created to merge my two passions. I have tried my best to make my posts accessible to everyone, though an interest for the subject definitely helps! To know more about the importance of environmental toxicology and some of my other reasons for creating this website, check out my post here.

Please feel free to browse around and learn more about the field! I recommend reading Basics of Toxicology and Tox21 posts in the order they appeared. I have also included (and linked) articles that I have written for other science communication websites.

Sources and Citations
Subject matter: While I have tried to provide important references wherever possible, several posts have incomplete or no references because they cover basic concepts in toxicology. I had learned these topics in courses I had taken during my Ph.D.

Iowa State University: Principles of Toxicology; Toxicology Methods; Pesticides in the Environment; Insecticide Toxicology; Special Topics in Insect Toxicology; Aquatic Toxicology; and Regulatory Toxicology

John Hopkins University: Toxicology 21: Scientific Applications and Evidence-based Toxicology (through Coursera)

Images: To avoid any issues with copyright, all the photos/diagrams used on this site are either mine, from the public domain, from educational and organizational websites that allow their images to be shared, or from open access journal articles (sources/citations provided).


My interest for toxicology was largely kindled by my Ph.D. advisor, Dr Steven Bradbury. His enthusiasm and commitment to acquiring and sharing knowledge are quite infectious! This website owes its existence to him, and to my husband Ardhendu Tripathy who has always encouraged and supported me.

Site Responsibility

If you see any mistakes or misconstructions on this site, please contact me (nkrish@umd.edu). I am solely responsible for them.