This is quite a promising video of Earth's possible future, depending upon people and things and how they all come together. Some of the proposed technology is amazing on many levels but alas, I will be getting way up in years if I'm even alive then.

Give a watch as it doesn't cost anything to dream...

Some good tech in that video 

For me the ones that stood out as most positive were the Smart Grid, Carbon Capture and Power Generation. 

As for the Hypersonic Missiles ... well, I think the world could get by just fine without them.