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Charles backs online climate drive
The Prince of Wales is due to talk about how the internet can be part of the campaign against climate change when he addresses delegates at Google's annual European zeitgeist conference
Charles is giving a speech to business and technology leaders on the 'challenges of the 21st century' at the event.
The heir to the throne has already begun to building an online community to support his campaign to save the world's rainforest.
The royal launched a YouTube film earlier this month featuring prominent supporters of his environmental aims including the Dalai Lama, Hollywood actors Harrison Ford and Robin Williams and football legend Pele.
The two-day conference is in its fourth year and past speakers have included Prime Minister Gordon Brown and Conservative leader David Cameron.