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We do live in a perfect world, as in we were created for this planet, we evolved and adapted around this environment, then we changed it and did so in a manner that is unstoppable, and rather than try and prevent making it worse we're still actively pushing on the gas. Shit is getting bad out there and its getting worse every day. 
I don't think we'll make it to another planet, we're not making enough progress, we may be the generation that is the peak of civilization.
I see this headline every six months.  This is how encroached industries act when their primary product is found to literally be poisonous.
Big tobacco denied the link to cancer for decades, despite them knowing the damage.  Before that, the lead industry kept leaded gasoline in our cars.  There were Congressional hearings in the 1920's on the matter, but we did nothing.  
Big asbestos did the same thing under the same circumstances starting in the early 20th century.  And if we wanna go back to the 19th century, big mercury, which absolutely was a thing, acted in the same way when we tried to keep mercury out of our food as an admittedly effective preservative. 
They follow the same playbook every time.  You'd think we'd be able to counter them by now.
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This American Experience documentary on the literal poisons that used to be in our foods, and the fight against the industries putting them there, comes highly recommended.  You may need a VPN to view if you're out of the US. >

It's hard to solve a problem when rich and powerful people have a deeply vested interest in not solving it. >

...or obstructing the solution. >

This. Most powerful politicians have family connections and the people that profit from the environmental pollution are their friends & college buddies. >

Iirc the Eisenhower Administration did a military study regarding the effects of Climate change so everyone knew. >

Note there was an article published in 1912 commonly titled Coal Consumption Affecting Climate.  We've known about this for more than a century, and at least in the US where I am, have done basically nothing.
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link to snippet from 1912 article >

“The affect may be considerable in a few centuries.” >

I worked at XOM for a long time, was an executive, and internally we always accepted it. We had full on company-wide presentations with Sherri Steuwer (the exec in charge of climate at least for a time) where she acknowledged it, shows us all the science, showed what had to be done, etc etc etc.  Meanwhile we were funding almost exclusively climate deniers in Congress.  For a period our head of lobbying was a totally normal woman who since left for a similar job at an airline.  It was a weird cognitive dissonance I could never understand. >

Allow us to clear up the confusion:  $$$$$$$$$ >

this has been public knowledge for a long time.