But there's a 50% chance one spouse will die before 78 and a 50% chance the second will hold on until almost 89, the Government Accountability Office calculates.
It is time of remarkable brain development, but also an extremely vulnerable time for young children, especially in the developing world, where a child has a four in ten chance of living in extreme poverty and 10.5 million children under age of 5 die from preventable diseases every year.