Welcome to the Inquiry from the BBC World Service.
I'm Charmaine Kosier.
Each week, one question, four expert witnesses and an answer.
March 1995, Berlin, Germany.
The first-ever annual conference based around a United Nations Treaty to coordinate international responses to climate change is underway.
A senior UN official, Michael Zammick-Hutaya, gives an opening speech.
Climate change is not a problem that can be solved by one group of countries acting in isolation.
It can only be addressed successfully by the global community.
In the 30 years since the initial conference of the parties, or COP,
hundreds of millions of people have been internally displaced after the worst effects of rising global temperatures forced them from homes and jobs.
those numbers are predicted to rise and expand beyond national borders.
So this week we're asking, is the world ready for more climate migration?
There's no place in the world in which climate change has not had an imprint,
is not impacting people.
Amali Tower is the founder and executive director of Climate Refugees,
a global NGO focused on climate mobility.
But where you're seeing the impacts of climate change increasing displacement of people is in the most vulnerable poverty stricken areas in the world.
Climate change impacts generally emerge in two ways.
There's what the scientists call slow onset events and sudden onset events.
Sedan onset events are a little bit easier to understand for the average person.