Conflict-free colouring represents a rapidly evolving area of combinatorial optimisation with significant implications for both theoretical research and practical applications. In this framework, ...

Conflict-free diamonds may be the most conscientious way to buy an engagement ring. But the debate over what makes a diamond conflict-free is rife with … well, conflict … so consumers looking for one ...

The African diamond industry came under pressure in the late 1990s when it became clear that conflict diamonds were playing a role in the brutal wars in Angola, Sierra Leone, Liberia and the ...

As a major diamond producer, Russia earns billions of dollars that other nations say help finance war. The clash exposes the many loopholes in regulation of conflict diamonds. By Dionne Searcey Russia ...