In spring, woods and gardens ring with song, as birds claim territory, nest and raise their fledglings. But as Mary McCann explains, birds don't just sing by day, there are notable night warblers too.

Blue fin tuna, wild freshwater eel, and other sushi ingredients are in steep decline due to the popularity as people around the world demand this Japanese cuisine. Restaurant owner and sushi chef Bun Lai says the ancient tradition of sushi must evolve and become sustainable. Living on Earth’s Annie Sneed reports.

The Gibe dam in Ethiopia, under construction since 2006, could become the 4th biggest dam in the world. But Philemon Loyeli, a local activist tells host Steve Curwood that the free-flowing river is vital to local people's livelihood and Elizabeth Hunter, from human rights group Survival International, explains that the project would disrupt the annual flooding of the Omo River, and the government is ignoring their plight.

Three years after the BP oil well disaster, scientists are struggling to understand the effects on the Gulf ecosystem. From Mind Open Media, David Levin (le-VINN) reports on the oil's impact on the tiny creatures that form the base of the food chain.

North Atlantic right whales ordinarily give birth in the balmy waters of Florida and Georgia but in January a whale named Wart gave birth in the cold waters of Cape Cod Bay. We check in to see how Wart and her baby fared since then.

Why stay indoors just because of rain, wind, snow, or ice? A new book, The Wild Weather Book, by Fiona Danks and Jo Scholfield, details activities to get children outside in all sorts of weather. Recently some elementary school students in Massachusetts tested a couple of the projects and Naomi Arenberg joined them.

A new study from Johns Hopkins University updates 2006 research that found excess levels of arsenic in U.S. chicken. In 2009 the Center for Food Safety petitioned the FDA to stop the use of arsenic in chicken feed. The Center’s lawyer Paige Tomaselli tells host Steve Curwood that the FDA has not responded to the petition, so now the Center has filed a lawsuit.