Freya, a young female walrus, had been lounging in the sun in an Oslo, Norway fjord for weeks. But, on August 14, Norway's fisheries directorate killed her.
Earth has been speeding up over the past few years, resulting in our shortest day ever as measured by atomic clocks. Will we need to subtract a leap second?
Scientists with NOAA Ocean Exploration say they found weird ocean holes on the Atlantic seafloor while exploring an underwater volcano. What made them?
Some groups are trying to clean up garbage patches in the oceans while others are trying to stop the plastics from entering the oceans in the first place.