Bill Nye discusses the 'Sexy Sliding Scale' of gender identity and sexual orientation on an episode of his Netflix show: 'Bill Nye Saves The World'



"By three or four [years old], most kids identify with their gender," Nye reported. "And it doesn't always match the gender they were assigned at birth. And a person's gender identity may change over their lifetime!"



"It should be up to you. Sure that makes things confusing for those who insist that everyone pick an F or an M, but people, we have to listen to the science. And the science says we are all on a spectrum. Our labels, our fashion, even our washrooms are still catching up to that truth," he added.



More from Nye's show:







