One of Earth's biggest weapons in the fight against climate change is the Amazon Rainforest, serving as a 'carbon sink' capable of absorbing more carbon than it emits. However, as trees are cut down as a result of deforestation, recent research shows climate change is making a more visible impact across the region. John Miller, a scientist with the NOAA Global Monitoring Laboratory who co-authored this study on the Amazon, breaks down the results of his research and what changes we'll see as a result.