Nurith Aizenman

It's the Green Climate Fund. It was called out last week by President Trump, who said he would cut off U.S. "billions." What does it do, exactly, and what will be the impact of the cutback?

It wasn't that long ago. Just last fall. Nearly 45,000 people signed a petition in protest. Then again, the Amazon warrior has always been a controversial figure.

The administration wants to reduce the current $8.7 billion global health budget by about 26 percent. Family planning programs would be the hardest hit.

The president has long looked to China and India as a model for galloping economic growth. Here's why it's unlikely that the U.S. could grow even half as fast.

The administration claims the U.N. population agency supports China's "coercive" abortion policies. UNFPA calls the claim "erroneous."

When the president took action to block U.S. foreign aid funding of groups linked to abortion, a Dutch government official started fundraising.

Just as we rank hurricanes and earthquakes, officials have developed a five-phase scale to rank food crises.

A new report finds that remittances by migrants from Latin America and the Caribbean topped $69 billion last year — the highest amount on record.

The new president has reinstated the "Mexico City" policy first instituted by Ronald Reagan in 1984. And this version is even broader than previous ones.

There's a growing effort to actually test whether aid programs work. But how much has it accomplished?

A new study tries to find out what happens when girls in the developing world are on their period. And it's complicated.

A new study out of Kenya looks beyond the usual questions to determine the broader impact of protecting a farmer's livestock.

The news broke this week: Her controversial tenure as honorary ambassador for the empowerment of women and girls will conclude on Friday.

We look at the remarkable findings from a new study of Kenya's M-PESA system, out in 'Science.'

Please, says the singer-songwriter, don't pigeonhole her as some sort of "refugee artist." She calls her music "East-African Retro-Pop."

The "Mexico City policy" blocked federal funds for international family-planning charities if they were to "promote" abortion.

Some argue that looking at data about a charity's effectiveness is the best way to make your pick. But there are drawbacks.

The U.S. has helped mount a historic effort to eliminate poverty and roll back diseases. Will Trump keep it going?

The vision: Microloans will let women start their own businesses. What do the studies show?

A Doctors Without Borders exhibit leads visitors through a simulation during which they're crowded onto a tiny boat and led through stifling hot tents and makeshift latrines.