37 THE BATTERY

CHAPTER 37 THE BATTERY Inside Roz was a battery that could power her body for incredibly long periods. On land, her battery recharged whenever she was in sunlight. But Roz had spent weeks swimming far below the reach of the sun, and finally, her battery began running low. So she headed to the surface to recharge. When human divers return from great depths, they rise slowly so their bodies can adjust to the changing pressure. Our robot, however, had no such concerns, and she rushed upward at full speed. The ocean around her faded from black to blue to bright aqua. The currents became stronger. The water became warmer. And as she swam into the sunny upper ocean, her battery began refilling with energy.