Topic a Month Podcast
I didn't quite get to an expression of my main theme, so added this in the comments afterward:
To tie this all together, the reason for caring for others is that others cared for us. As we expand who we help, who we educate, more people will be able to use their skills effectively and find their best fit in the world. As we have done this, for example, women have become more empowered, giving them the right to control their own reproductive choices. So, counter-intuitively, helping people who are having lots of babies results in decreasing population.
As people see a world of hope, where their children will survive and help each other, they don't see the need to have lots of children. Educating each other, empowering each other, leads to people making better choices for leadership, instead of feeling the need to join a paramilitary group and tear down governments.
We can do this on the world scale, bringing appropriate technology where it is needed, as well as across the table from each other, listening intently, and teaching instead of fighting.