Comparisons with today's largest living land animals may not be quite as accurate as first thought.
Scientists have successfully identified an entirely new moon in orbit around the gas giant Neptune.
A mile-long asteroid shaped a bit like a hippopotamus has skipped us by on its closest approach in 400 years.
Archaeologists have uncovered new writings by Hippocrates, the famed 'father of Western medicine'.
Hippopotamus ranching was almost introduced in the United States at the beginning of the 20th century.
Donna the Nile hippopotamus lived at Mesker Park Zoo in Indiana for over five decades.
Palaeontologists have discovered three new species of dinosaur in Queensland Australia, one of them a predator nicknamed...