But the Malthusians might retort that man's famed ingenuity has not stopped prices from rising in real terms over an extended period.

Their projects, demonstrated with models, pictures and films, are not glamorous, but they are thoughtfully designed, often in collaboration with local groups, and aesthetically stylish.

The cornucopian belief that human ingenuity will always find ways to increase the availability of resources is not a sure bet (see article).