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'Dark' Earth Hour sheds light on climate change
(Agencies/Xinhua)
Updated: 2009-03-29 09:58

A combination picture shows a view of the Agbar Tower, the latest symbol to mark the Barcelona skyline, before (top) and during Earth Hour March 28, 2009. More than 80 countries have signed up for Earth Hour on Saturday in which homes, office towers and landmarks will turn off their lights from 8.30 pm local time to raise awareness about climate change and the threat from rising greenhouse gas emissions. [Agencies]