Whale excrements provide sustenance for fish, but as their populations dwindle so do the nutrients they provide the ocean. CNN’s @billweircnn reports how scientists hope to restore these nutrients by using *fake* whale poop on “The Whole Story” feature, “How to Unscrew a Planet,” premiering Sunday, April 23 at 8pm ET/PT. #CNN #climatechange #earthday | How artificial whale poop can help save the planet