5 June, World Environment Day
The theme of this year’s World Environment Day is ‘Time for Nature’ - a call to action to combat the accelerating species loss and degradation of the natural world.
8 June, World Oceans Day
With the help of Inuit hunters, geophysicists recently recorded the various calls, buzzes, clicks and whistles of narwhals (toothed whales that possess a large "tusk" from a protruding canine tooth) as they summered in a Greenland fjord.
On this day, listen to the sound of the narwhals.