Scientists have uncovered a surprising genetic shift that may explain how animals with backbones—from fish and frogs to ...

Both the UK and US Governments have pledged to end research using animals, but is such a goal realistic? And how might it change medical research? Talha Burki reports.

Mammals, for instance, differ dramatically in their maximal lifespans—from the tiny forest shrew, which lives only one or two years, to the bowhead whale, capable of living for more than 200 years.

Across the planet, animals are increasingly suffering from chronic illnesses once seen only in humans. Cats, dogs, cows, and even marine life are facing rising rates of cancer, diabetes, arthritis, ...