World Population Day is an occasion to reflect on how the world can best address the challenges posed by the combination of urbanization and climate change.
There will be a rise in the scale of sewage discharge into rivers and waterways due to extreme weather events as a result of climate change, MPs have been told.
Nairobi is one of the fastest growing cities in Africa. The city's population, which was about 2 million people a decade ago, now stands at over 4 million. This puts a lot of pressure on the natural environment.
Opinion: As climate change makes itself felt through heatwaves and floods, are our mega-cities ready?
World Population Day is an occasion to reflect on how the world can best address the challenges posed by the combination of urbanization and climate change.