Human activities are threatening the health of the world's oceans. More than 80 percent of marine pollution comes from land-based activities. From coral bleaching to sea level rise, entire marine ...

It stretches from Europe to North and South America, and is the second largest of the five oceans. The water in the oceans is constantly moving in patterns called currents. As the currents flow ...

Yet humans are well on the way to wrecking the oceans. From climate change and melting ice caps to islands of floating garbage, we are increasingly fouling what was once the perfectly, chemically ...