Councillors in Toronto are set to consider keeping warming centres open 24-7 for the rest of the winter amid growing calls for homelessness to be declared a public health crisis in the city.
Pakistan is facing an acute water shortage and climate change is damaging crops. The public health system, meanwhile, is in a disarray. To deal with these challenges, the country's authorities need long-term planning.
A small group of environmentalists who were forced to leave Ukraine are working together to document possible environmental crimes committed by Russia.
People living in slums, who mostly survive on meager incomes, are most vulnerable to toxic air because their work often requires them to stay outdoors for long hours.
As it struggles to clean up and reconnect with the world, Tonga confronts the risk that international aid workers could bring in a virus it has so far kept out.
