Researchers have used a new technique to analyze DNA from the finger bone of an ancient Denisovan found in a cave in Siberia. The Denisovans have captivated scientists for years because they belong to a little known species of human, separate from Neanderthals. The new technique split the double helix so that the genome was able to be sequenced over 30 times. This data provides crucial information about why some human species died out and others expanded dramatically. Read more here.