We are living among our next generation’s unicorns. Across the world, children are increasingly growing up with tales of animals they will never meet. Not because these creatures are by any means ...

On a high plateau in northwestern Argentina, a cluster of turquoise lagoons has quietly rewritten what scientists thought they knew about the earliest stirrings of life. Hidden in one of the driest ...

New University of Arkansas research adds weight to the suggestion of a long-lived ocean covering Mars’s northern hemisphere.