Sources of (subjective) information (plural). All media are more or less biased, so it's up to you to filter that bias and try to find the least biased sources.
Media is the plural of medium
, although this fact is usually disregarded. Point this out to people if you want to feel superior.
Person A: I watch Fox News because it gives me the important events of the world in an exciting package.
Person B: Fox News is more biased than any official government channel would dare to be.
Person A: It's a media - of course it's biased. It's doesn't matter which media I use.
Person B: Why don't you learn the difference between a plural and a singular before trying your hand at logic.