Guardian: The Brazilian government is to launch a four-year tree census of the Amazon to improve understanding of the impacts of deforestation, climate change and conservation efforts.
The study will also help to assess the potential value of the biodiversity under the canopy and the growth of human settlements in the Amazon region, which is home to a number of fast-expanding cities, as well as uncontacted indigenous tribes.
The cataloguing operation will be the most detailed study for 40 years a period...