National Geographic

Rare lenticular cloud photographed in Japan. National Geographic

Scientists are still arguing why otters juggle pebbles. Most likely, this can only indicate that the animal wants to eat. After all, the most playful otters became on the eve of meals. National Geographic

Astronauts on the space station have to train hard to keep their muscles from atrophying. How do they do it in zero gravity? National Geographic

The main distinguishing feature of the tarsier is the eyes. They have the largest eyes relative to body size among mammals. National Geographic

The process of staging a fight by Jackie Chan in the movie "Rush Hour". National Geographic

The shoebill stork performs its mating call when it rapidly snaps its upper and lower beaks, much like a gunfight. National Geographic