Geo.

Take a minute to check out this user-friendly way of seeing every corner of the Earth.

It'll take you 'round the world in 80 seconds: http://www.earthalbum.com/

On a more serious note, this analogy facilitates an understanding of the severity of our present situation here on Earth.

Reality check warning: http://www.miniature-earth.com/

One final thought - courtesy of Oscar Wilde:

(Image: coolcards.co.uk)