Peace Puzzle. Population control.

We are too many.
Conflicts arising from the scarcity of food and water, arable land, housing and jobs are all partly caused by the competition among us for the same resources.  
Peace won't likely be in our future or that of our planet unless we can stem the growth of our species. At 7 billion humans and counting,  the human population continues to rise and the increasing pressure for dwindling resources and the effects of rising temperatures, air and water pollution and habitat loss are the driving forces of the mass plant and animal extinctions that have already begun. (and Peace must embrace the lives of all of the world's living things--not just humans). 

Population control starts with family planning and birth control.
Sex education and the encouragement within communities for members to have small families can all help stem or reverse the problem of human overpopulation.
Birth control is one solution and contraception (the prevention of unwanted pregnancies) is one way to reduce our numbers and is better than the alternatives of
War, Famine and epidemic Disease.

So add my small piece to the bigger puzzle.
Encourage smaller families.
Make sure women (and men) around the world have access to safe and just reproductive care.