Minecraft torches of all kinds

Hey! how come it is so dark here?! Let me... OW! D'oh! OOF! Oh, there's the switch. Today I will tell you explorers about light. Torches are items in the game that support you with light. They were the only one until glowstone was implemented. You craft torches with a stick and coal. Torches can melt snow and ice. making safe trails to get to your house when it's night. There is one catch: torches do not work underwater. Redstone torches are crafted also with sticks but this time with Redstone. Then there are charcoal torches. Every single torch melts snow and ice. They are the same. And I am sure glowstone is for  good making light for underwater bases only in creative mode because you could die staying underwater too long in survival mode.