Every year, thousands of American eels make an amazing migration from their freshwater homes into the Atlantic Ocean, where they spawn and die.
Neutering feral dogs in Madagascar means saving the native species.
Cities can host surprisingly diverse bird species, apart from the ubiquitous pigeons and sparrows. Where do they go in the winter?
Thanks to botanical artists, 19th century paintings of perry pears are helping to bring England's forgotten bubbly back to our glasses.
A new study from Oxford and Tel Aviv universities found reptiles are underrepresented in conservation efforts, just in time for Reptile Awareness Day.
Despite the jurassic-sounding name, pteridomania (from the Greek for fern, plant and mania) was responsible for the 19th century fern leaf collector's job.
First things first: eels are fish.
A growing consensus among those who hold this view is that sleep is needed for maintaining a healthy nervous system, not necessarily a brain.
How do fish swim? Having fins and tails help, But it takes more than that to be fast and avoid danger. Diving into fish physics.
Those who view animals as property misunderstand the nature of property, a legal scholar suggests.