Governments use tariffs to protect domestic industries, generate revenue, and sometimes as a bargaining chip in trade negotiations.

Trump’s latest announcement of a “universal” minimum tariff of 10% on most imports (with punitive rates as high as 20–34% on strategic rivals like the EU and China) represents a seismic shift in U.S.

Water security in Southern Africa. An introduction to the hydrology of Africa, including steps taken to achieve water security in Southern Africa. BBC.