A generation of American teenagers is growing up dealing with the issue of school shootings. We look at how their experience shapes their perspective, and their engagement in the search for solutions.

How do you make progress on international affairs without key allies? Here's a look at the Trump administration’s bold experiment to leverage US strengths on its own.

Terror groups aim to inspire fear and divisions. But in Maiduguri, Nigeria, which has endured Boko Haram attacks for nearly a decade, our reporter tells a story of urban revival – and enduring love – through the life of a Muslim and Christian couple.

When it comes to acquiring knowledge, scientists are often constrained by physical limitations. But when they expand their thinking to consider options that may seem beyond what is humanly possible, new doors open. That's what happened when marine biologists enlisted robots to study obscure regions of the sea.

This story is about the stewardship of resources and compassion for the homeless. So our reporter wasn’t too surprised when, as she was leaving the interview after dark, the five “grannies” insisted they all get in the car and drive her home, even waiting until she was safely inside her apartment.

As befits its reputation for generosity, Canada is ranked in the top four of nations most accepting of migrants, according to a recent Gallup poll. As a share of population, its yearly immigration is three times that of the United States. This distinction may help explain why, as the host of a Group of Seven summit of major Western leaders, Canada has invited a most unlikely guest to the G7’s gathering in Quebec next month.

She is Sheikh Hasina, prime minister of Bangladesh. Her South Asian country is now coping with one of the world’s latest mass movements of refugees – the forced exodus of 700,000 Rohingya Muslims from mostly Buddhist Myanmar in a case of violent ethnic cleansing.

In addition, Canadian Prime Minister Justin Trudeau has put a related topic on the G7 agenda: Venezuela, also a recent source of mass migration. An estimated 5,000 Venezuelans a day are fleeing to neighboring countries, a result of mass hunger and poverty under a dictatorial regime. The number seeking asylum in the US jumped last year by 88 percent. And after a sham election in Venezuela last Sunday, the total number of migrants is expected to rise from 1.5 million to 2 million by year’s end.

Canada’s spotlight on these two countries is both welcome and well timed. According to the United Nations, the world is experiencing the highest number of displaced people on record, or about 40 million people, in places as diverse as Syria, South Sudan, Nigeria, Yemen, Venezuela, and Myanmar. Millions are fleeing for reasons just as diverse – political turmoil, mass poverty, or ethnic and religious conflict. In Myanmar, many Rohingya women fled just to avoid being raped.

While many Western countries, including the US, are increasing aid to refugees, the need for humanitarian assistance keeps rising even as the West’s ability to address the root causes of each crisis has diminished. Canada hopes to start a fix for all this by focusing the G7 summit on ways to influence the leaders of Myanmar and Venezuela.

Western democracies have a big stake in such a difficult task. Anti-immigrant feelings are disrupting their politics, reflected in Britain’s vote to leave the European Union, and the rise of extremist parties in many EU nations. Voters increasingly fear a loss of national sovereignty, local community, and rule of law.

Like many other global issues, mass migration needs to be on the agenda of world leaders. And it takes a generous country to put it there. As Canada knows, every refugee deserves a home, either back in their own country or in a welcoming foreign land.