The lovely man who designed the back-end-technical part of this website also happens to be a brilliant, incredibly busy scientist, so until he is able to make adjustments to the site to make using the navigation simpler, read these instructions: WHEN ARROWS APPEAR AT THE TOP OF YOUR SCREEN, THIS MEANS THERE IS MORE INFORMATION FOR YOU TO VIEW. WHEN YOU SEE THE ARROWS, USE YOUR MOUSE TO SCROLL FORWARD AND BACKWARD ACROSS THE PAGE. Simple when you know how!