On today's show, environmental journalist Tom Pelton joins us live in Studio A. He’s been writing about the Chesapeake Bay and other environmental issues for more than two decades. He is the Director of Communications for the Environmental Integrity Project, and the host of The Environment in Focus, which airs Wednesday mornings and evenings here on WYPR. His new book is called The Chesapeake in Focus: Transforming the Natural World.From Baltimore’s leaky sewer system to farms in Pennsylvania and even pollution from factories in the Midwest, the Bay and its ecosystem face serious challenges. What will it take to meet them?