[M_Grey]

It's important to realize that when it comes to terraforming you have a tradeoff between speed and cost. The notion of producing an atmosphere in a 100 years is borderline magical, but certainly staggeringly expensive in terms of energy input. Your "sunshade" is another example of a quick, but incredibly pricey option.

Most terraforming research tends to be more realistic, and therefore looks at scales of thousands of years for change to take effect, often driven by engineered single-celled organisms in stages.

[dwaltrip]

For those who are interested, I recommend the terraforming​ video by the excellent Isaac Arthur:

https://youtu.be/ikoNQNj9ZnU

I discovered his channel a few weeks ago, and was blown away. He has tons of videos that cover all aspects of humanity's potential future in the stars in great detail, and does a very good job of staying grounded in hard science. It seems like he really knows his stuff. The episodes can be quite long (15 - 60 mins), but definitely worth checking out. I've been slowing making my way through them.

[M_Grey]

I'm always looking for youtube channels like this, and that's right in the timeframe I look for. Thanks!

[dwaltrip]

My pleasure. Some of the earlier videos from his megastructure series are a little slow, but he has some absolute gems.

So far, I've really liked the video on "Black hole farming at the end of civilization", some of his Fermi paradox episodes, as well as the one on terraforming.