These images from the Smithsonian Magazine Photo Contest show just why penguins have waddled into our hearts ...

For more than four decades, former Chief Photographer Tony Spina captured some of the most iconic moments in the city's ...

Beetles battling for mating rights, a bear stalking through the rainforest and a damselfly perched in front of a waterfall ...

The stunning winners are a diverse range of intimate portraits, infrared and iPhone photography, and striking black-and-white ...