Deforestation in the Amazon Rainforest

Researchers keep tabs on deforestation in the Amazon by satellite imagery, but to know the reality of what's causing it, you have to be on the ground. Watch this video of researchers Robert Walker's and Eugenio Arima's recent Amazon adventure.For more about this work, visit "Journey to the Center of the Amazon" at http://www.nsf.gov/discoveries/disc_summ.jsp?cntn_id=119428&org=NSF