It is the one my favorite channel from my childhood and spend atleast 2-3 hours every day on this channel even more if possible, the reason is that I never bored from there shows , they help me to understand various concept of science which I will not able learn from anywhere , I get knowledge of outside world also. I also get knowledge of various space projects of nasa and how much human is able to know the universe , I am able to know various types of birds, animals, trees, forests , hills etc.
And also understand the manufacturing of cars, bike to a candy, their have shows of every thing . there is survival shows also which help me to under stand how to survive in conditions when things get wrong . and most important is that they make the things very eas to understand. So discovery is the best channel among all the channel because they tell you reality .