Glaciers carved out the Denmark Strait cataract between 17,500 and 11,500 years ago, during the last ice age. The waterfall straddles the Arctic circle and funnels polar waters from the Greenland ...

As ocean waters warm and ice caps melt, the salinity levels in polar waters are decreasing, meaning less water could flow over the cataract. You may not be able to see the world's largest ...