If Western allies fail to send Ukraine the weapons it needs, the odds increase of the war dragging on indefinitely, at a terrible cost to both Ukraine and Russia and a growing risk to the wider world…

The Olympics are becoming less sustainable, and the winter games in Beijing are no exception. Can organizers make them more environmentally friendly as the climate crisis intensifies?

A changing climate and growing competition for resources is raising tensions among Arctic nations.

Europe has long been reliant on Russian natural gas, but the war in Ukraine is forcing governments to look for different energy sources. 

With this major U.S.-Russia nuclear arms control agreement set to expire next year, Washington should coordinate with Moscow for a New START treaty extension to allow for further negotiations and the…