From the prospective of education and knowledge discovery channel is the best and from last so many years it has been educating people in so many fields. There are so many shows about animal behaviour, and humans, and other field of science.
The shows which I enjoy the most are why planes crash, science of stupid. In why planes crash complete details of how plane accidents were caused and what went wrong what could have been done to avoid it. Science of stupid is a show host my manish paul in which he shows videos in which people wanted to do something but it went otherwise and also tells the science behind it. every parent must ask their kids to watch this channel as it gives so much knowledge.