The four types of planetary civilizations, explained by Michio Kaku

The four types of planetary civilizations, explained by Michio KakuThe four types of planetary civilizations, explained by Michio Kaku External link

Humanity is a type 0 civilization. Here’s what types 1, 2, and 3 look like, according to physicist Michio Kaku. Subscribe to Big Think on YouTube ► https://www.youtube.com/channel/UCvQECJukTDE2i6aCoMnS-Vg?sub_confirmation=1 Is anybody out there? Renowned physicist Michio Kaku discusses we coul

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