The travelling salesman problem (TSP) remains one of the most challenging NP‐hard problems in combinatorial optimisation, with significant implications for logistics, network design and route planning ...

After the deaths of Rob Reiner and Michele Singer Reiner, legal experts explain how the “slayer rule” can block a killer from inheriting—and what could happen next in probate court.

Current political and economic issues succinctly explained. Sign up to receive CFR President Mike Froman’s analysis on the most important foreign policy story of the week, delivered to your inbox ...

Canadians are foregoing travel to America this year in response to strained US-Canada political relations (Credit: Getty Images) In recent years, one in four visitors to the US has been Canadian. But ...