The idea of small, mischievous elves who protect the home – if they are treated well – can be found in Scandinavian folklore.

Sharks have had a tough time since the 1970s, when overfishing, habitat loss and a growing trade in their fins began to cut ...

New research shows that losing threatened requiem shark species could erase millions of years of tooth evolution and squeeze ...

Researchers have dated vertebrae from a massive prehistoric shark thought to have ruled the waves off northern Australia back ...