I recommend exploring one of these a day for a healthy brain.
The Ragged Trousered Philosopher
Carl Sagan on Climate Change
Kurzgesagt – In a Nutshell
The Warhammer 40,000 Universe
Bernie Sanders on Republicans
George Carlin on Power Concentration
Scott Galloway on Young People’s Futures
Yuri Bezmenov on Ideological Subversion

The Daily Show