The Chemical Engineer16h
Salt of the Earth: Part 1
From 6000 BC, the Chinese harvested salt crystals from Lake Yungchen which partially dried in the summer sun. Many other ...
The 25 bucket-list highlights of Africa
Tick off 15 African countries – among them, Gabon, Sao Tome and Principe and Liberia – on a 37-day cruise up the west coast, ...