The unlikely couple of a baby hippo and a 130-year-old tortoise were still together, a year after the hippo was separated from its family by the Indian Ocean tsunami. The relationship between Owen, the two-year-old hippopotamus, and Mzee, the giant tortoise, surprised conservation workers and made international headlines. Owen was living with his family on the Sabaki River when massive waves from the Indian Ocean tsunami reached the East African coast. He was washed into the ocean and stranded on a reef. Residents of Malindi, a small coastal town, used fishing nets to catch him. He was then taken to...