The Google UK Homepage(google.co.uk) on 20th Nov 2007 displayed this logo:
Drawn by Claire Rammelkamp, a 14-year old, Winner of the “My Future” UK doodle contest for students. According to Google, over sixty-five thousand doodles were created around the theme “My Future”.
The logo is titled “This or this?†and shows two variants of future earth; one destroyed (by global warming, pollution and/ or war), and one alive and green, powered by natural energy. The two “o†letters in the Google logo are formed by these two alternative futures, and the green “l†is a question mark.
There are similar intresting logos designed by other kids here.