Heavily overpopulated planet. In the final stage, at least. Which is - total oxygen collapse and 99% of population extinction in horrific and painful way.
Question remains, though, was our Mars' fate alike?
I am a person who is passionate about an art, philosophy, writing and science stuff.
Also, I love graphic storytelling. A LOT. Especially manga.
And video games (I listed my favorites down below v ).
In other words - there's no end to human curiosity.