Oceanus Procellarum - the lunar Ocean of Storms - is a vast volcanic plain, thought to have been created in an ancient asteroid impact. More recently, scientists came to believe it formed via processes within the moon itself.
While some wetland birds in the U.S. appear to be doing well because of conservation programs, other birds are experiencing steep declines in population numbers.
Both NASA and the Indian Space Research Organization placed spacecraft in orbit around Mars last month. They'll join forces on an Earth-orbiting mission set for 2020.