True, although we’ve never had over 7 billion souls living on the planet at the same time — this number is greater than all of the people who have ever walked on this planet.

The impact of climate change and continued population growth this century suggests that the number of refugees will grow from circa 40 million today to over 1 billion by the end of this century. Thus migration will be the new normal

More than a billion people will have to flee their homes because of global warming

Let’s not underestimate the challenges that present and future generations will face and the decisions that they will have to make