LifeArcherfish prove they can count by spitting at computer screens Previous research has suggested that fish have an innate sense of numbers, but critics say these experiments aren't the final word. Now, a new study has shown that archerfish really can count News
LifeStones smashed by horses can be mistaken for ancient human tools Horses kick and stamp on rocks to keep their hooves in good shape, and archaeologists have now realised this can result in a collection of sharp stones that look like the work of an ancient human toolmaker News