Peace

The FARC-backed presidential candidate Rodrigo Londoño pulled out of the race over health concerns, but his violent past had made his candidacy a divisive one.

• By Fabio Andres Diaz

After a major court decision protecting a peace agreement between rebel groups and the government, the future looks promising for Colombia, but the process is still far from over.

• By Fabio Andres Diaz

Dense trade networks that formed in the years after World War II may explain a startling decline in war over the same period.

• By Nathan Collins

One woman living in one of the most dangerous and unstable regions in the world has a radical idea: peace curriculums. By working with both students and mothers, she's been able to stem the tide of violent extremism in her school. Now, it's time to take her plan nationwide.

• By Bushra Qadim Hyder

And it's costing the global economy about $1,350 per person.

• By Talia Hagerty

According to an emerging branch of economics, approximately $9.46 trillion.

• By Talia Hagerty

What happens when a premodern society swaps axes for semiautomatic weapons?

• By Kevin Charles Fleming