Birds spend a lot of time and energy singing, but they don't do it the same way in every season of the year. And some can't sing at all. What's the purpose of birdsong?
Will Syrian religious extremists migrate to the West as refugees in need – and then do harm? A team of researchers surveyed Syrian refugees in Lebanon, Jordan and Turkey to find out the answer.
Demographers have figured out a simple and effective way to estimate the number of unauthorized immigrants – even without information on citizenship.
Migration helped forge the very social, cultural and economic infrastructures that Britain now seeks to wall off from the rest of the world.
Deportees and other migrants return home wealthier, more educated and with more work experience than people who never left. This 'brain gain' benefits the whole community, financially and politically.
The U.S. will likely continue to threaten Mexico with trade tariffs due to Central American migrants, and Mexico will respond with more drastic, inhumane measures. None of it will stop migration.
New research found persistent differences between generations of people in the UK when it comes to their attitudes to immigration.
Migration offers a fix for the islands 'drowning' as a consequence of the climate crisis – but are there better alternatives?
The inner cities of Australia's major state capitals are failing to meet the needs of families in terms of space, amenities and affordability.
Carola Rackete, captain of an NGO search and rescue ship, was arrested by Italian authorities when landing in Italy. She isn't the first to be criminalised for trying to save people at sea.
Maps that divide the world into 'no-go' and 'safe' zones has created a new politics of danger.
For their next president, Guatemalans must choose between two veteran politicians with shady pasts and alleged ties to organized crime.
Wars play a central role in increasing numbers of refugees worldwide. Is it time to think about a "destruction tax"?
Why sexual and gender based violence has become a phenomenon within refugee families.
Mexico says it emerged from tariff negotiations in Washington with its 'dignity intact.' But that dignity comes at great cost to the migrants fleeing extreme violence in Central America.
Other countries have tried linking migration to foreign policy before – it needs to be a credible and capable threat to work.
Lawyers ask ICC to investigate EU over its policy of deterring migrants from crossing the Mediterrean, the world's deadliest border.
Corruption and poor opportunities are driving out the country's most talented young workers – and damaging Ukraine's long-term development.
EU migrant households are actually a net benefit on the public purse in much of Europe.
Sea levels could rise by two metres by 2100, sparking a refugee crisis unlike anything the world has ever seen.