Medieval Europe often baffled itself with this question: What makes the world go round and round? Instead of concentrating on Heliocentric theories, the thinkers should have looked for answers close home. Mother. Or should it be mothers? They ensure the spinning of our planet. [Sounds unlikely? Well, your birth was unlikely too.] This phenomenon isn't a contribution from humankind alone. It's generic to other breathing creatures as well. Motherhood is the reason why Earth can still claim to be hatke. One doesn't have to be mamma's boy to acknowledge this fact. It's self-evident. Look around. Seek the purest form of love, devoid of derivatives or moribundity. Lo! Mother's love, it is. She might not be the world's greatest mom but she is yours to keep. And it's not just today. Science may disagree but she compels Earth's rotation/revolution/evolution/etc day in and day out.