Salted fish is traded for fur and feed grains. A block of wood is whittled into a toy horse and sold at an artisan market.

Paris, France — They don’t advertise and they are largely unknown to the general public but niche perfumes are able to command prices of hundreds of dollars from men and women seeking to stand ...

China’s move to ban exports of niche metals to the US is creating opportunities for Canadian producers — though tariff threats by the incoming Trump administration may limit their prospects.