Latest Geography of Chad Stories
The Late Neogene Sahabi Rivers of the Sahara and Their Climatic and Environmental Implications for the Chad Basin
By Griffin, David L Abstract: This paper is based on the concept that the drainage system of c. 7.5-4.6 Ma is still reflected in the geomorphology of northeastern Chad and adjacent areas of Libya.
Word of the Day
- A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.
The word 'pawl' probably comes from a Latin word meaning 'stake'.