END OF THE CIVILISATION/EARTH  :

                      Earth will survive 0 to 5 billion years, the present nuclear/hydrogen powers or a gamma radiation can destroy the Earth before you blink you eyes, so we're never safe. And after 5 billion years the Sun will be at its extreme point, imagination of a normal Earth without a normal Sun is stupidity.

Predicting the last day is almost impossible for pygmy mankind, but the almighty God can can,who created the universe as well as the Earth and know the beginning and the end of them. Humans discover some theories of the nature only, those set forward the science and technology. Who knows if one day the progresses of civilisations become a reason of mankind destruction or might be almighty destroy the Earth with help of the natural activities.