Scientists of the world, coming from across all disciplines and working across a wide range of subjects and themes, are very concerned with the extensive fires which have been taking place in the Amazon Rainforests and in the Pantanal Region (shared by Brazil, Bolivia and Paraguay), the planet's largest tropical wetland. In order to express our concern, a document titled "Fire in Paradise: Declaration of World Scientists" has been prepared, asking for a set of actions aimed at addressing the problem. The Declaration can be reviewed here. If you agree with it, you can sign the Declaration here, and express your opinion about a problem which is taking place in Brazil, but which concerns the whole world. Please feel free to pass this note on to other colleagues.