Telegraph: Leaders of indigenous tribes in the Amazon, some of whom have had no contact with the outside world, will call on the UK to back a plan to stop vast areas of the rainforest being destroyed by oil companies. Anita Rivas, the mayor of Ecuador’s Orellana province, will urge Gordon Brown’s Government to sign up to the plan as a way to demonstrate its commitment to tackling climate change. She will launch a campaign in London to persuade western countries to support the proposals, …