Mr Bush's advisers argue that Mr Clinton's concentration on the peace process was not merely unwarranted, but in some ways harmful.

ECONOMIST: Changing camels in mid-dune

The process of land concentration tends to be amplified by large-scale foreign land acquisitions, resulting in growing inequalities in farm size.

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It is the process of moving water from an area with a low concentration of dissolved material, such as salt, to a place with a high concentration, by passing through a membrane.

FORBES: Getting Power From Salty Water

You need to develop your powers of concentration, and understand that trying to multi task will be the death of the process.

FORBES: Why Apprenticeships Are the Fastest Way to Acquire Skills