Authors: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

The planet Earth, though not threatened with destruction by man-made global warming, is by no means indestructible. There are many unpredictable events within our solar system, and still more outside it, that could make Earth uninhabitable by humans.

Paul Johnson

         
Copyright © 2001 - 2014 BrainyQuote