Photographer David Doubilet first dove below the surface at age 8 and has spent a lifetime making underwater images. He talks to NPR about his new book: Two Worlds: Above and Below the Sea.
Scientists predict that plastic in the ocean will eventually outweigh the fish there. Where is it all coming from? And is it making our food unsafe? Researchers are trying to find the answers.
Neil Hammerschlag has looked inside the mouth of a wild tiger shark and lived to tell the tale. He says that sharks pose only a very small risk to people: "Humans are not on the shark's menu."
A voyaging canoe built to revive the centuries-old tradition of Hawaiian exploration is circumnavigating the globe. Its crew has already traveled 26,000 miles navigating with the sun, stars and waves.
A scientist estimating the weight of candy wrappers, bags, bottles, syringes and other plastic trash in the world's water sees a synthetic tsunami. Should China and India create more landfills?