Talks in Vienna starting Tuesday will try to bring both the United States and Iran back into compliance with the 2015 nuclear deal. It won’t be easy.

Local officials have instituted testing, mask and social-distancing requirements, stationed medical personnel at the Mount Everest Base Camp, and made plans to swoop in and pick up infected climbers.

Donald Trump reshaped the courts. Today we’re looking at how President Biden is trying to leave his own mark.

Even in the densest human habitations, there are orders of magnitude more ants than there are of us, doing the hard work of making our crumbs disappear.

Grounded by the pandemic, a travel photographer spent the year pedaling the roads around his home, resulting in a series of poetic self-portraits.

A new formulation entering clinical trials in Brazil, Mexico, Thailand and Vietnam could change how the world fights the pandemic.

Debate in France over its student union.

A Green Pass allows us, the vaccinated, to go to concerts, restaurants and sporting events. But Israel’s real-time experiment in post-lockdown living leaves many questions unanswered.

A royal rift laid bare. Key figures arrested. Rumors of a failed coup attempt. An intense bout of palace intrigue has knocked Jordan’s image as a reliable bulwark in a turbulent part of the world.

He also noted the economic and social hardships of the pandemic, especially for the young.