 Photo Gallery Census of Marine Life scientists have inventoried 17,650 sea creatures that had never known sunlight living nearly three miles below the sea. Scientists used cameras, sonar and other technologies to find the species.
Apollo 11's 40th Anniversary 
The frozen landscape, dry valleys and active volcanoes that make up Antarctica provide a living laboratory for scientific study and a wondrous journey for those traveling to the ends of the Earth. Experience the continent with this special report.
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They are not just cute. They are one of the leading indicators of what's happening to the planet.
• PHOTOS: Penguin pressures
Scientists say they still aren't sure which pollutants are altering the fish, or whether the discovery poses any threat to people's health.
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