Snow

Snow is a block modifier. When a map is generated, there is a chance that snow will be falling. Any block which doesn't have another block vertically above it at any height will develop a layer of snow. Snow can be removed in the same way that any other block is destroyed. Placing a torch will melt any snow around it and will prevent it from developing. This is also the case for lava and active furnaces.

Creating a block on top of snow will make it hover in the air, as if the snow occupied a whole block.

This was added on July 9th, 2010, along with the addition of ice.