Youtube activity of "Grey Matters" (@o0GrayMatters0o) on "National Geographic" channel.
-
UCfsJbRY6BAviuM5YtW_DlaQ
Commenter youtube id
- 3
-
Grey Matters
Commenter name
-
@o0GrayMatters0o
Commenter name id
-
""
Comments by video
"Time Is But a Stubborn Illusion - Sneak Peek | Genius"
"Why a Giant Machine Is Digging a Tunnel Under D.C. | National Geographic"