Part 2 Looks at the world of micro-imagery. Neuroscientist Joseph Altman's images from the early 1960s proved that new brain cells are created, even in adult brains. Other groundbreaking images in this episode include Andreas Vesalius' detailed drawings of the inside of the human body and Raymond Gosling and Rosalind Franklin's X-ray diffraction image that became a vital piece of the puzzle in the search for the structure of the DNA molecule.