[nitrogen]

You should watch the entire segment because he "plot twists" a little past half way.

And the jokes are just part of the Last Week Tonight formula. This is information disguising itself as entertainment, not the other way around. Oliver also did a segment recently about special tax districts that was quite informative, as another example of the LWT formula for you to sample.

You get a lot more information from a LWT piece than from traditional news; the comedy bit might even just be to avoid being sued for satirizing living people (maybe "comedians" can get away with more than "journalists").