Robert Dallek

The lifelong health problems of John F. Kennedy constitute one of the best-kept secrets of recent U.S. history - no surprise, because if the extent of those problems had been revealed while he was alive, his presidential ambitions would likely have been dashed.

Late 19th-century populists saw bankers and industrialists manipulating markets to enrich themselves at the expense of small farmers and labourers and favoured political candidates promising economic relief through free and unlimited coinage of silver.

I doubt very much that the chief executives of any of the Fortune 500 corporations can name five edible plants, five native grasses, or five migratory birds within walking distance of their homes, or name the soil series upon which their house sits. And I would contend that if you don't know where you are, you are in fact nowhere at all.

Having a Congress with a more diverse educational and professional background would serve the country well. And given the budget challenges facing America today, we might benefit from a few more cold, calculating problem solvers, and fewer courtroom impresarios.