On December 9, 2017, a YouTube user named Undea2 uploaded a video called: EL MAS GRANDE ERROR DE TRANSMISION DE DISCOVERY KIDS (DISCOVERY KIDS ´S MOST GREATEST TRANSMISSION ERROR).
In the video, Undea2 said that a subscriber sent him an email in which a claimed to have seen a commercial of an alleged final episode of the series "Sid the Science Kid", in which, according to what was seen in the commercial, it was about Sid's teacher dead and Sid and his friends trying to revive her.
The existence of the chapter is not 100% confirmed, however it is likely to exist since in the comments of the video other users claim to have seen that same commercial.
Link of the video: https://www.youtube.com/watch?v=hCbKhEtqoOQ
(it is recommended to activate the option of automatically generated subtitles in English)