The hydrological ecosystem services of Amazonian forests must be valued, says conservation biologist Carlos Peres.

We should heed researchers' findings that ceasing deforestation in the Amazon could boost its climate change resilience, says Andrew Mitchell.

Forests are valuable assets, and reduced emissions from deforestation and degradation (REDD) should be prioritised, says Virgilio M. Viana.

Brazilian president Luiz Inácio Lula da Silva, stands up for biofuels' role in sustainable development.

Jeffrey McNeely says proponents of biofuels need to take greater account of their environmental impacts and use science to make them more efficient.

Guilio Volpi argues that Brazil's policy of promoting biofuels risks increasing deforestation and greenhouse gas emissions.

Land use is not given the recognition it deserves as a key driver of regional climate change, Roger Pielke Sr. argues.

Carbon emissions trading would not be an effective way of halting deforestation of the Amazon rainforest; using Brazil’s existing fiscal measures for conservation may hold more promise says Emily Boyd.