In March last year, two million Sydney residents switched off lights and appliances for an hour. The idea was to send a message about arguably the greatest threat facing the planet: global warming. The move clearly captured the imagination of people across the world, because this year 23 other cities
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/it-raises-awareness-global-warming
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/thailand
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/n-c-america