Earth Hour

[MarkS]

If London takes tonight's (Sat 27 March) Earth Hour as seriously as some of these cities then the difference could be quite noticeable:
http://news.bbc.co.uk/1/hi/world/8590756.stm

[mickw]

You mean there'll be grey clouds instead of orange 

[MarkS]

Hmm - there's some cheating going on here. 

Take the Sydney "dark" image and brighten it up - it looks almost exactly like the "light" one.  Its difficult to find any light that was switched off between the two.

[Tony G]

Mark,

They must have realised it was a fake, as Sydney is no longer on the images.

Tony G