Men have been waging war almost continuously for thousands of years. But not women. It is mainly men who start wars, fight in wars, and obsessively build ever-more-deadly weapons. Not women. Using scientific evidence, The Female Imperative explains the genetic and cultural reasons for that fundamental difference. It also explains why the world is in great danger from new kinds of weapons, new kinds of war, and massively destructive climate change. All of which means that women should assume a role in every nation's government at least equal to that of men. To achieve it, women need help through national policies that enable them to act as mothers, while also working as legislators, governors, chief executives, and heads of state. Can this book help to change the world? If fewer wars, less violence, and more constructive national policies can make the world a better place, the answer is clear. This is the Female Imperative.