I think the ..end of time...thingy is a reference by most people to the end of the human race as apb may have pointed out....I think the planet will still support life for a long time after the human race can no longer survive....In actuality we may have already gone past the point where we can survive...humans are the only creature that I know that have to use artificial means to survive ...we have to wear clothes and build heated shelters in order to not die from exposure..... unlike all other animals that I know of.