Brazilian city's boom threatens Amazon
7 April 2012 Last updated at 09:13 BST
The booming Brazilian economy has brought a new lease of life to the remote city of Manaus, on the banks of the Amazon river.
A new bridge across the world's biggest river and a healthy manufacturing sector are providing plenty of opportunities for the city to grow, but there are warnings about the impact on the environment.
Sarah Grainger reports from Manaus.