The ratings agency’s decision will have no consequences for the U.S. dollar’s global role, but it highlights the country’s darkening fiscal outlook and governance challenges.

If 2018 was a year marked by international challenges that percolated but did not boil over into full-blown crises, next year may well be the year in which that good fortune runs out.

Israel at 75 is facing fundamental choices about its identity. 

At the COP27 summit, leaders will discuss how to deal with the many consequences of climate change. These four cases show how the climate crisis is altering the threat of zoonotic diseases.