Water and energy -- two critical and often finite resources -- are today more than ever connected in complex ways. A new feature package explores the connection in stories that range from solar thermal plants in the Mojave Desert to an ocean thermal project near Tahiti. And the ongoing Gulf oil spill provides yet another lurid example.

Local officials in Carlsbad, Calif., see salvation for their water-starved community in a huge proposed desalination plant. Poseidon Resources, the company hoping to build it, says building it won't cost taxpayers and ratepayers a dime. But tough investigative reporting shows that southern Californians would pay at least $640 million over 30 years for the project.

"Restoration of the Chesapeake Bay entered a new phase [Tuesday] as the Chesapeake Bay Foundation, its co-plaintiffs, and the U.S. Environmental Protection Agency settled their lawsuit with a binding agreement that will require pollution to be reduced across the nation's largest estuary."

Russia's Lake Baikal, the oldest and deepest freshwater lake in the world, has been the focus of environmental protection efforts. Now the reopening of a dirty Soviet-era paper mill is restarting old battles.