Mexico's Andres Lopez Obrador may be able to play a decisive role in bringing this agonizing chapter of Venezuelan history to an end.

A comprehensive list of each episode of The President's Inbox organized by topic. 

To preserve a stable biosphere, scientists believe humanity must protect 30 percent of the Earth by 2030, and ideally half of the planet by midcentury.

Looking for something to read or watch? Here is a list of all the books and films recommended on The Water’s Edge.

A global concert of major powers has undeniable attraction as a potential deus ex machina in our age of global turbulence. But its elegant simplicity is a mirage.

The Group of Seven (G7) serves as a forum to coordinate global policy, but experts are increasingly questioning the group’s relevance.

The pandemic has taught us many harsh lessons. After such a painful year, we can’t forget them.

Some deployment of geoengineering is inescapable. The world urgently needs to begin crafting strong principles and rules for geoengineering's collective governance.