Okay, not exactly one million, but he has quite a lot of successful YouTube channels. These are some of his channels.
Biographics
Brain Blaze
The Casual Criminalist
Decoding The Unknown
Geographies
Highlight History
Into the Shadows
Megaprojects
The Science of Science Fiction
Sideprojects
The Simon Whistler Show
Today I Found Out
TopTenz
Warographics
Biographics
Brain Blaze
The Casual Criminalist
Decoding The Unknown
Geographies
Highlight History
Into the Shadows
Megaprojects
The Science of Science Fiction
Sideprojects
The Simon Whistler Show
Today I Found Out
TopTenz
Warographics