-Our ancestors once told me that the Earth is no longer a safe place for us. They also told me that long, long ago, when the great-grandfathers of our grandfathers still walked this ground, humans were the rulers of the Earth. Yes, you heard right. We were the alpha species, the leaders, the complete owners of our planet. No one ever dared to take our place, we were way too powerful for them all.- The old man sat down, as the kids who surrounded him came closer so that they could hear better. Many of them sat next to each other to fight the cold of that starry autumn night. Their breaths condensed in small clouds coming from their mouths. ...