The Pixels, Journey to the Bottom of the Desk — Douglas Evans

Global warming has wreck havoc upon Upper Poyntz Colony. The Pixel Corps of Discovery is sent out to find the source of the excess CO2 in the atmosphere. Days later, the Pixel's plane crash lands in a strange world, on the desktop of fourth-grader Faith Singer. Being one millimeter tall, the Pixel family must take a long, perilous journey to escape...through the inside of the desk and out the bottom.