A dusty town in the parched northeast has become the nation’s show business destination. But climate change and technology are posing new challenges there.

© Dado Galdieri for The New York Times

The United States is largely absent from the United Nations climate negations in Brazil. So who is stepping up?

At this year’s climate summit, the United States is out and Europe is struggling. But emerging countries are embracing renewable energy thanks to a glut of cheap equipment.

President Trump has used his sweeping global tariffs as an economic tool and a political cudgel. A decision invalidating them could hamper his power.

The president’s trade truce with China has lowered U.S. tariffs to a level that could pause a longer-term effort to reduce America’s dependence on Beijing.

Investors sent major global indexes higher on optimism that President Trump and China’s top leader, Xi Jinping, could reach a wider agreement this week.

Brazilian farmers are lobbying to roll back deforestation restrictions in order to sell more soybeans to the huge Chinese market.