Enormous blocks of ice are pushed skyward along pressure ridges as the sea ice thins and forms melt pools. Round the bend at the National Geographic headquarters

at the National Geographic headquarters

Northern Territory Australia

The enormous ribbed trunk and sprawling canopy of Bhutan's national tree the Bhutan Cypress

The steep eroded slope of a rock outcrop high above a savannah plain

with pastel afterglow descending across a desert sky free from human generated pollution

Enormous blocks of ice are pushed skyward along pressure ridges as the sea ice thins and forms melt pools. Round the bend at the National Geographic headquartersEnormous blocks of ice are pushed skyward along pressure ridges as the sea ice thins and forms melt pools. Pram Point, McMurdo Sound, Ross Island, Antarctica.