diff --git a/README.md b/README.md
index eb34319..b4e3df9 100644
--- a/README.md
+++ b/README.md
@@ -5829,6 +5829,7 @@ Raw
 * [Amanda Sopkin](https://dev.to/amandasopkin/fantastic-personal-websites-and-how-to-make-them--22om) - (2018) Fantastic Personal Websites and How to Make Them | tips for good portfolio
 * [awesome-portfolios](https://github.com/iRaul/awesome-portfolios) - Awesome Creative Portfolio Websites
 * [HTML5 Please](http://html5please.com/) - Use the new and shiny responsibly. | Look up HTML5, CSS3, etc features, know if they are ready for use, and if so find out how you should use them – with polyfills, fallbacks or as they are.
+* [Jack Lenox](https://www.smashingmagazine.com/2019/01/save-planet-improving-website-performance/) - (2019) How Improving Website Performance Can Help Save The Planet
 
 # Windows
 * [NSSM](https://nssm.cc/commands) - the Non-Sucking Service Manager