Hi:) Rhino conservationists' hopes were dampened today by news that Ratu, a female Sumatran rhino, had lost her pregnancy. Just months after the announcement of the pregnancy—the first at Indonesia’s Sumatran Rhino Sanctuary in Way Kambas National Park—Ratu lost the embryo. Still, say conservationists, the very fact that Ratu became pregnant at all should keep hope alive for the beleaguered species.