Little attention, however, had been paid at first, for, by interplanetary law, each planet's dwellers remained at home, unless their presence was requested elsewhere.And no call had come to us nor to any other world from Aerth; so we had put it down to some purely natural cause with which, doubtless, the Aerthons were perfectly capable of coping without outside help or interference.The government of Bhutan is also trying its best to conserve forests.
Eagerly, he searched the skies for the little green speck that was Earth. It, as well as the Sun, must be hidden behind Vesta. For the first time since the crash he saw the stars instead of the vision of Vesta which their porthole afforded.
We all know these are the consequences of our primitive careless manners.
Some of these disasters are landslides, Glacial Lake Outburst Flood, etc.
If you go far enough back into SF, you'll find other colors also speculated upon for earth as seen from space.
Maybe the sky was blue because other frequencies were being reflected rather than scattered, so it would look red from space; maybe it would be yellow from reflected sunlight...