Antarctic base staff huddle inside a survival tent during field training on the sea ice. Bridal party weathered and beaten motor boat

weathered and beaten motor boat resting on dry land

Passenger airliners fly over the Lincoln Memorial and Potomac River

A Nile Crocodile sliding from a grassy riverbank into a wetland

A bright purple flower stands above the dense mat of invasive water hyacinth choking the surface of a freshwater lake

A vast sandstone escarpment and plateau towers over rugged gorges

Antarctic base staff huddle inside a survival tent during field training on the sea ice. Bridal party weathered and beaten motor boatAntarctic base staff huddle inside a survival tent during field training on the sea ice. Windless Bight, Ross Ice Shelf, Ross Island, Antarctica.