Iran and the United States will hold more negotiations next week over Tehran’s rapidly advancing nuclear program.

In a first meeting, the United States and Iran show signs of pragmatism and limited aims, which would make success more ...

The two sides held preliminary negotiations on Saturday, and an Iranian official said they would resume next week.

Pollution levels are spiking in Nepal's Kathmandu, leaving its residents with air quality worse than any other city in the ...

P EOPLE ARE dying for clean air. According to the most recent estimates from the Institute of Health Metrics and Evaluation ...

A new study has revealed a significant shift in the sources of nitrogen oxides (NOx) pollution in central London, with gas ...

President Trump is set to open direct talks with Iran this weekend in a high-stakes push for Tehran to give up its nuclear weapons ambitions, raising a chorus of questions and concerns from ...

Long-term exposure to high levels of air pollution may harm the brain health of older adults in England, finds a new study.