Most countries manipulate their currencies – at least a little – but at the moment that's not the real reason they are undervalued relative to the dollar.
In the last century, several South American countries faced coups, military dictatorships and social uprisings. Despite economic improvements in recent years, the continent remains mired in unrest.
Brazilian evangelicals are politically conservative, but they still believe in climate change. Turning them into climate activists, however, will be a challenge for the environmentalist movement.
Farmers worldwide say Monsanto's policy of charging for every use of its genetically modified seeds violates their planting rights. But judges in these patent law cases aren't so sure.
A host of political and social factors have created Brazil's polarised political climate.
Hundreds of bishops, priests, missionaries and tribal leaders are at the Vatican for the Synod of the Amazon, a three-week meeting focused on the environmental crisis threatening Amazonian peoples.
Progressives are leading in the presidential elections of Argentina, Uruguay and Bolivia, bucking the region's recent rightward trend. But there are lessons in the failures of leftists past.
Genetically modified mosquitoes were released in Brazil in an attempt to halt the spread of dengue fever by reducing the mosquito population.
As the House mounts an impeachment investigation of President Trump, examples from Central and South America show that ousting an executive leader from office doesn't always have the intended effect.
Reversing the damage from fires in Brazil's rainforest is not as simple as allowing trees to grow back. Decades of research shows how fires degrade their long-term health and utility.
Shifting the capital of Indonesia and other countries may actually send the wrong message that cities too can be discarded.
There are a number of effective interventions to prevent gender-based violence among adult women and men at risk of HIV infection. But little is known about the effectiveness of these in young people.
Conservatives worldwide favor carbon pricing, cap-and-trade systems and other innovative environmental plans – just not in the United States.
As deforestation rates in Brazil rise, it's worth asking whether the country can repeat the successes of the last decade. Current trends don't bode well.
After five centuries of extraction, the Amazon region stands on the brink.
Huwã Karu Yuxibu, the cultural centre of the Huni Kuin indigenous group in the Amazonian state of Acre, was destroyed by fire in August.
Central banks are expected to act without fear or favour. But to deal with climate change, they may have to encourage financial institutions to favour certain types of activities over others.
Fire doesn't have to be destructive. For many in the Amazon, it is part of their livelihood and culture.
Coffee production is booming, yet wholesale prices have been falling and global demand is stagnant. What's happening to one of the world's favorite beverages?
If the Amazon rainforest functions as our planet's lungs, what do raging wildfires threaten? An atmospheric scientist explains why the fires, though devastating, won't suffocate life on Earth.