Peter Joseph "Train of Thought" and Q & A Session | ZDAY 2017 Australia [The Zeitgeist Movement]
Here's a really impressive speech on the future of the Earth and what's possible. He talks about tech possibilities, and I just learned about a blockchain project called IOTA that aims to do what he said was possible. Ain't living in the future just neat?
A page about IOTA: https://dontpanicsell.com/2017/06/21/iota/