Professor STEPHEN JACKSON (Botany, University of Wyoming): I think it like a "Twilight Zone" world, where a lot of what's familiar to us will disappear and climates that are completely unfamiliar to us will appear.

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He had been linked with a host of clubs around the world but, in the twilight of his career, has decided to join a team on the rise thanks to the injection of hundreds of millions of dollars by its Qatari owners.

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As Donald Rumsfeld might have put it, they have left a world of known unknowns for a twilight landscape of unknown unknowns.

ECONOMIST: Financial markets

While Jeter nears the twilight of his career, he is still a proven commodity in the business world.

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