This weekend I made a monumental discovery. There are huge turtles in the duck-pond in the park. To understand the size of this discovery, you have to picture the scene a little…. This is a city the size of Birmingham. In this city, there is one smallish park shared between all these people. In the smallish park, there is a smallish man-made duck-pond, which also serves as a boating lake. It is filthy, it can be located by smell. And yet on Sunday morning, I saw five or six huge turtles like floating casserole dishes, covered in green slime, sunning themselves just under the surface of the soup-like water. It’s hard to believe anything could survive in that environment. I guess a creature hardy enough to weather the last ice age shrugs its shoulders at rusty bicycles and the odd shopping trolley.