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

Even the cleanest air, at the centre of the South Pacific or somewhere over Antarctica, has two hundred thousand assorted bits and pieces in every lungful. And this count rises to two million or more in the thick of the Serengeti migration, or over a six-lane highway during rush hour in downtown Los Angeles.

Lyall Watson