Agence France-Presse: Even as people world over symbolically dim lights to fight global warming on Saturday, many will join email and social network campaigns that invisibly contribute to climate change.
The 10th edition of Earth Day, organised by the WWF and backed by other NGOs to raise awareness about the threat of climate change, will see landmark monuments - from the Eiffel Tower to the Empire State building to Taipei 101 in Taiwan - go dark at 8.30pm local time.
Individuals are also encouraged to participate...