Here's why:
* The show's run was planned to be limited: The creators intended the show to be a finite project, aiming to make a significant impact on science education for children within a specific timeframe.
* Success led to other opportunities: Bill Nye's popularity and the show's success allowed him to pursue other ventures, including writing books, speaking engagements, and hosting other television shows.
* Changing television landscape: The popularity of children's programming and the way children accessed entertainment was changing, with cable channels and new formats gaining ground. The show's format may have become less commercially viable.
While the original show ended, Bill Nye's passion for science continued. He has been involved in various science advocacy efforts and recently hosted a reboot of the show, Bill Nye Saves the World, which ran from 2017 to 2018.