Sharks Can Smell a Drop of Blood from Miles Away The most persistent shark myth floating around is that these predators can ...

OSLO (Reuters) - Protection measures have failed to stop around 100 million sharks being fished every year and a third of all shark species are now threatened with extinction, conservationists say.

Scientists have long wondered if there are physical constraints that limit the possibility of how large an organism can become through evolution. A new study involving 54 species of sharks indicates ...