Here's what we know about the fires in the Amazon rainforest
Brazil's Amazon rainforest is in flames, burning at the highest rate since 2013, when that nation's space research center first began tracking fires there.
Here's what we know.
How big is the Amazon rainforest and what does it matter?
The world's largest rainforest, the Amazon spans eight countries and covers 40% of South America -- an area that is nearly the size of two-thirds of the US, according to the World Wildlife Fund. More than 30 million people live in the Amazon, whic...