Each Friday, I look at what the presidential contenders are saying about foreign policy. This Week: Joe Biden and Donald Trump remain locked in a tight contest where third-party candidates could deci…

See how six countries are faring amid efforts to protect 30 percent of the planet’s land and waters by 2030, and what will be saved if they succeed. 

Policymakers face complex cost-benefit considerations when intervening in the market to mitigate perceived risks, from climate change to competition with China.

A global surge in avian flu outbreaks in birds and some mammals is worrying poultry farmers, scientists, and health experts. The trend is provoking questions about the future of the disease and globa…

Each Friday, I look at what the presidential contenders are saying about foreign policy. This Week: Donald Trump gave his most detailed interview on foreign policy yet. He made some dubious claims bu…

The sprawling U.S. water system is central to the nation’s economy, but chronic underinvestment, increasing demand, and the consequences of climate change have revealed the system’s weaknesses.  

The World Bank and IMF have concluded their spring meetings, but questions remain on China, lending capacity, and balancing the interests of rich and poor countries.