This is too simplistic. There are simply many many issues and topics that can't be adequately explained in a few minutes. E.g. complicated weather interactions like El nino / la nina, or economic concepts like externalities.

And furthermore, even if you can compress your information into a short period, the audience might not beable to successfully absorb the information at that rate.

There have been studies done on this finding short form content to be less effective for education.