In the past two decades, technology has allowed scientists to learn so much more about the human body and its microbiomes. These discoveries may pave the way to new therapies.
People across Latin America are demanding greater political participation. Some countries, including Colombia and Chile, have responded by involving citizens in the making of their constitutions.
Older imported cars pose risks to motorists and spew pollution. Some countries, including Ghana, are taking steps to limit the harms of this piece of the vehicle life cycle.
The U.S.-led invasion of Iraq in 2003 led to civilian death and displacement. Twenty years later, Iraqis are telling their stories of conflict and trauma as they move towards healing.