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April 24, 2024

China
China’s Battle Against Air Pollution: An Update

Although China seems to have continued improving air quality during the Covid era, it is premature to celebrate the end of its war against pollution.

Worker walks past cranes at Yushen Yuheng power plant, a coal-fired power plant under construction, in Yulin City, Guangxi Zhuang Autonomous Region, People's Republic of China.

May 28, 2020

Treaties and Agreements
Open Skies: Another Dying Arms Control Agreement?

A pending U.S. withdrawal from the Treaty on Open Skies has alarmed some allies in Europe, who fear losing a valuable means of monitoring Russia.

February 12, 2020

Climate Change
Dimming the Sky

As climate change accelerates, some scientists are researching ways to alter our climate to slow down warming. But the method, called solar geoengineering, comes with some serious risks. 

Podcast A hazy sky above the clouds where solar geoengineering could occur.

November 3, 2017

Nonproliferation, Arms Control, and Disarmament
Taking Stock of the Treaty on Open Skies

A little-known treaty provides transparency for confirming arms control agreements and serves as an important measure of the health of the U.S.-Russia relationship.

OSCE

March 22, 2024

United States
How Big a Climate Threat Are Atmospheric Rivers?

Atmospheric rivers are gaining in intensity across California and the western United States. Communities need to adapt to the havoc wrought by this weather phenomenon.

A brown river threatens to overflow alongside a highway.

January 16, 2024

Ukraine
How the Drone War in Ukraine Is Transforming Conflict

Drone technology has been used extensively in twenty-first-century armed conflict, but the Russia-Ukraine war is driving innovations in autonomous warfare not seen on other battlefields.  

A man in camo releases a drone into the sky.