"To cure disease and prevent death is to promote the fundamental conditions of social welfare."
Scientists may soon be able to monitor whole ecosystems in real time.
Hearing people talk can terrify even top predators such as mountain lions, with consequences that ripple through entire ecosystems.
Scientists are examining evolutionary breadcrumbs to reconstruct the vision of whales that lived as long as 55 million years ago.
They seem to be capable of coordinating their dives from more than 60 miles apart.