Gender and sexual identity is complex. Understanding how it all works can help ensure Needle Syringe Programs provide care in a way that is safe and comfortable for all. For someone just learning about the various spectrums of human sexuality, the topic can be overwhelming. Not to fear! Here to lay out introductions to everything from gender to the difference between sexual behavior and sexual orientation is vlogger Hank Green! Check out his video to get a little closer to understanding and appreciating human complexity.