Deforestation of the Amazon rainforest the forest is still shrinking.<ref name="INPE/Prods satellite data"> INPE figures August to July.</ref> Norwegian prime minister Jens Stoltenberg announced on September 16, 2008, that Norway's government would donate US $1 billion to the newly established Amazon fund. The money from this fund would go to projects aimed at slowing down the deforestation of the Amazon rainforest. In September 2015, Brazilian president Dilma Rousseff told the United Nations that Brazil had effectively reduced the rate of deforestation in the Amazon by 82 percent. She also announced that over the next 15 years, Brazil aimed to eliminate illegal deforestation, restore and reforest
Amazon rainforest south as 45°. Climate fluctuations during the last 34 million years have allowed savanna regions to expand into the tropics. During the Oligocene, for example, the rainforest spanned a relatively narrow band. It expanded again during the Middle Miocene, then retracted to a mostly inland formation at the last glacial maximum. However, the rainforest still managed to thrive during these glacial periods, allowing for the survival and evolution of a broad diversity of species. During the mid-Eocene, it is believed that the drainage basin of the Amazon was split along the middle of the continent by the Purus Arch. Water