I don't see that everything except Canada, Alaska, Greenland, Siberia and Antarctica was inhabitable.
For instance in Eocene the climate remained fairly warm and homogeneous (the most uniform in the Cenozoic).
From the equator to the poles, forests grew. Fossilized remains of cypress and sequoia have been found on the Arctic Ellesmere Island, and palms — in Alaska and northern Europe.
Equatorial and tropical forests (with palms, fig trees, and sandalwood trees) persisted in Africa, South America, India, and Australia.
Eucalypts, sequoias spread widely, and new types of broad‑leaved trees appeared.
By the end of the Eocene, rainforests were preserved only in the equatorial parts of South America, Africa, India, and Australia — due to the onset of cooling.
To be honest, looking at Paleogene climate reconstruction I believe it was the best time in earth history. The way things go shows us that all attempts to resist burning fossils are quite futile. It takes some kind of catastrophe to change people habits. The level of coordination required to achive the goal of lowering emissions looks unachievable to humanity. We have enough time to adapt, adaptation is more reasonable and pragmatic approach.
The fact that this always surpises americans doesn't stop to amaze me. American politcs to some extent affects literally everybody on the planet. But only 300M of them are allowed to vote directly. I consider this situation unjust :)
I agree that in most cases things like this is a subject of conspiracy-theory-eqsue speculations. However, while rarely, things happen which make you think that under some circumstances even some fantastic scenarios realize. For instance, most people thought that Australian general-governor is purely decorative position until in 1975 it turned out that its latent power can be seized.
I believe that current approach to diversity is too focused on race\gender\orientation issues. I suspect that this rather brings more imbalance. To make things truly shine the scope must be widened. The first criterions which come to mind are general intelligence and skills. I strongly believe that the current sad state of Google search which everybody complains about can be easily attributed to their policy of hiring smart and skillful employees.
I do drive and can confirm that "invisibilty" is the reason for many (if not the most) accidents. Actually, I have even changed my car driving habits to be more I would say preventive.
And yes, I do recommend Ryan F9 videos, they are really outstanding.
Where all this energy from a dyson sphere is supposed to go? Most of the energy we produce finally ends up heating the atmosphere. This doesn't seem to be the case for a supercivilization. The energy may be turned into matter but from efficiency standpoint it is simpler to convert existing matter to whatever you want.
This wasn't as bad as confusing hotmail for hotmale (not a big mistake when English is not your native language). But I was more like learning something new about pipelines :(
To be honest, after the collapse I was to busy making ends meet. Later, surprisingly, the sad realization was the fact that the western propaganda was in no way better than the soviet - the soviet one was too straightforward and it was easy to spot what was omitted, what was exaggerated etc.
I considered myself old and cynical but the level of hypocrisy recently is astonishingly, absolutely mind blowing.