What are some technologies around today that few know about?

Looking glass, haarp, auto-assembling and remotely controled nanostructures -- essentially remote 3d printing in a way, they call it claytronics iirc

None Don't still you know today we're living in information age

Anyone largely pushed to know good development in minute even he himself tried to keep from it

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Seeds. Like for plants. Life is the most amazing technology out there.