Man-made global warming alarm

With reference to yesterday's "Giant leap into space", astronauts typically express awe and even love for the beautiful Earth below while they're in orbit.

- Frank Sterle Jnr

I wonder how they feel when seeing the immense consequential pollution from raging massive forest and brush fires - like the ones that viciously consume largely Canadian forests and choke the air with health-damaging particulates every year, basically due to human-caused global warming? I also wonder if a large portion of the planet's most freely polluting cor