http://embryons.wordpress.com/2012/01/31/another-earth-cahill-2011/

The loneliest places on the planet are those yet undiscovered – the frozen poles of ice and snow, dense coniferous forests of the north, vast stretches of sand in the south. One can wander here for days without ever meeting another living thing, and the only trace of one’s own presence are the footprints left behind (and subsequently erased by nature’s capricious temperament). But what if there were another place, lonelier still than those on Earth?

Full thoughts at the link above.