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The comments published on this page reflect the balance of views we received.

A truly brilliant documentary of which many more should be produced and shown. Walmir is doing such a great job despite the potential fatal consequences that he faces.
Simon Hughes, Essex

A most wonderful and worthwhile programme. What a courageous man - a real world hero.
Christine Hennessey, Scotland

An excellently-crafted hour-long environmental documentary that will live long in the memory. Hopefully there will be a follow-up in a few years time to see if Ibama's activities reduce deforestation still further. Walmir is an extremely impressive person to be knowingly placing his life on the line to continue the cause - his humour undimmed. More programmes like this please.
Ralph Bradley, Stamford

Adrian Cowell and the production team combined to make a great programme. The question is why was it given such a lousy transmission slot? I was on my way to bed and came across it by accident. This programme should be dubbed in many languages and transmitted internationally.
Michael Tormey, Ireland

I watched Jungle Beat on BBC Two last night and would like to commend you for one of the best environmental documentaries I've seen for a long time. It really brought home the reality surrounding deforestation, which is easy to forget when you live in a country with enforced laws and a strong environment agency. It was also a testiment to the extraordinary work Ibama are doing. Thanks.
Harry Huyton, Sandy

The trees represent the lungs of the planet. Without them, the volume of oxygen will diminish. The loggers must be stopped by ensuring that every country allows only certified timber to be traded. Cut off the demand and the illegal trade will be reduced. The ivory ban is an example of what can be done, even if that was only partially successful. Timber is far more difficult to hide and so enforcement should be easier.
William D Chappell, London

That was a great and inspirational show. The heroic character protecting the rainforest is an example to us all of what one person and a lot of courage can do. Thanks.
Rob Mackrill, London

I think Walmir de Jesus is a great man and is doing great things. I feel it sad that the only way some people can make a living is by destroying. I wish Walmir de Jesus and ibama the best of luck in there quest to rid the illegal loggers and all connected. Great programme.
Daniel Richards, Leicester

Fantastic programme bringing issues to our homes not normally covered in much of today's TV. The Brazillian goverment must have more support for this excellent work from all countries including the US and China. Our government should support this work as should those companies that want to remain carbon-neutral.
Stephen Jelley, Billingshurst

What a rivetting programme! Excellent coverage of the issue of deforestation and of the courage of the agency employees.
Billy Bosworth, Stowmarket

I cannot understand why, when we have a global crisis such as deforestation, that we leave the enforcement of the laws to individual countries when international action is neaded.
Jim Harrison, Newton-le-Willows

It is fantastic to see that Ibama is improving its powers and that there are people with the courage to use them. They are doing fantastic work and putting their lives at risk. Thank you for showing us, the veiwing public, such fantastic film.
Graeme Grant, Glasgow

An amazing programme, very well done. Walmir de Jesus is an inspiration to us all. I hope he is well and still laughing.
Dave Purdon, Aberystwyth

Who is buying this wood? Certainly not poor countries. Before we condemn let us look at the role of economic super-powers.
David Walters, Devon

Great progamme. We need more of this kind of thing to increase awareness of what is happening around the world. I think the fines imposed should be increased and confiscation of assets should also take place. I also think that the governments of the countries where this illegal deforestation takes place should be looking at providing employment for all the people involved.
Stan Ross, Aberdeen

Congratulations to Adrian Cowell on a well-made and revelatory programme. I have lived in Brazil and travelled in some remote areas of Mato Grosso where I have seen illegal logging, mass burning of the forest and the resulting devastation. I know for a fact that Walmir de Jesus truly faces death every day because he is doing the right thing and fighting greed and corruption. Brazil and the world need more people like him. The BBC should do more programmes like this.
Rosamund Bowles, Hants

Given that we're talking about the ultimate survival of our planet here, I need programmes like this. We all need this information.
Matthew Saunders, London

Thank you, thank you, thank you, for a programme that makes me feel there is still a chance - for the forest and for us all.
Denis Frost, Bolton