India, April 4 -- A recent expedition by researchers and filmmakers into Siang Valley in Arunachal Pradesh yielded startling results, including the identification of several species new to science. The Siang river basin hosts 12 different types of forests, with a diversity of habitats that fosters rich biodiversity. The disappearance of habitats, in the form of deforestation and development, are among the biggest threats to biodiversity, conservationists say. Mongabay India writer Simrin Sirur reports

On July 16, 1912, the British Army published a notification announcing the success of its expedition into the heart of present-day Arunachal Pradesh. The upper reaches of the region had been a fortress for colonial forces until then, and th...