The first part explores how centuries of scientific and religious dogma were overturned by the earliest discoveries of the existence of cells, and how scientists came to realize that there was, literally, more to life than meets the eye.
What can the struggles of sturgeons and muskrats, two key Great Lakes species, tell us about the impact of upstream dams on the local ecosystem? Join conservationists as they assess the threats to the habitats of these animals and weigh options to counteract the damage before it's too late.
Sharks are more than just hunters. Only now are discoveries revealing a hidden side to their character. They have an intricate social life, complex courtship rituals, surprising ways of bringing up their young and extraordinary powers of navigation. They can forge relationships with the strangest of partners, even humans.