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A polar bear looks at a little boy as it swims in its enclosure's pool at the Ueno Zoo in Tokyo, Japan, on Wednesday. Highest temperatures in the Japanese capital rose to over 86 degrees Fahrenheit, six degrees higher than average for this time of year.

Image: A little boy, right,  looks at a polar bear as it swims in its enclosure's pool at Ueno Zoo in Tokyo, Japan
A little boy looks at a polar bear as it swims in its enclosure's pool at Ueno Zoo in Tokyo, Japan, on July 2.KIMIMASA MAYAMA / EPA