The United States is strengthening its commitment to the countries of the Mekong River basin, focusing on water management, transnational crime and health.
U.S. scientists are developing new approaches to reduce desertification and in some cases return harmed land to its earlier fertile condition.
Water shortages caused by drought in Iran are further compounded by failed government policies and corruption. As the crisis worsens, Iran's security forces are arresting scientists trying to help.
Earth’s fever got worse last year, breaking dozens of climate records, scientists said in a massive report that's called the annual physical for the planet.
As drought in California continues into a fourth year, the water shortage is driving farmers and residents to adopt efficient technologies and practices.
South America's biggest and wealthiest city is waiting for the rain. If it doesn't come soon, São Paulo could run out of water before 2015....