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Exterior of the Francis Crick Institute, one of the largest medical research centres in Europe, Kings Cross, London, England, United Kingdom, Europe

The Francis Crick Institute biomedical research centre, with St. Pancras railway station in the background, King's Cross, London, England, United Kingdom, Europe

A lab technician working in a laboratory in a small hospital in Nepal holds a rack of test tubes, Jiri, Solu Khumbu, Nepal, Asia

A young lab technician in a hospital in Nepal holds a rack of test tubes, Diktel, Khotang District, Nepal, Asia

A lab technician working in a laboratory in a small hospital in Nepal holds a rack of test tubes, Jiri, Solu Khumbu, Nepal, Asia

A lab technician working in a laboratory in a small hospital in Nepal looks into a microscope, Jiri, Solu Khumbu, Nepal, Asia

Humboldt University, Faculty of Law, former Royal Library, Under den Linden, Berlin Mitte, Berlin, Germany, Europe

Bas Relief of Boat, Tomb of Seti I, KV17, Valley of the Kings, Ancient Thebes, UNESCO World Heritage Site, Luxor, Egypt, North Africa, Africa

A small pod of pack Ice type B killer whales (Orcinus orca), just after making a Weddell seal kill in the Lemaire Channel, Antarctica, Polar Regions

Adult Commerson's dolphin (Cephalorhynchus commersonii), surfacing in Stanley Harbor in the Falkland Islands, South America

Skull of an adult killer whale (Orcinus orca), on display inside the town of Stanley, Falkland Islands, South Atlantic Ocean, South America

Adult black-browed albatross (Thalassarche melanophrys), in flight returning to nesting site on West Point Island, Falklands, South America

Skull of an adult female leopard seal (Hydrurga leptonyx), on display at the Natural History Museum in Stanley, Falkland Islands, South America

Adult Peale's Dolphin (Lagenorhynchus australis), bow-riding near New Island in the Falkland Islands, South America

Adult Peale's Dolphin (Lagenorhynchus australis), bow-riding near New Island in the Falkland Islands, South America

Adult Peale's Dolphin (Lagenorhynchus australis), bow-riding near New Island in the Falkland Islands, South America

Adult Peale's Dolphin (Lagenorhynchus australis), bow-riding near New Island in the Falkland Islands, South America

Views of the abandoned whaling station in Stromness Bay on South Georgia in the Southern Ocean, Polar Regions

Views of the Chilean research base Presidente Eduardo Frei Montalva, Antarctica, Southern Ocean, Polar Regions

Views of the Chilean research base Presidente Eduardo Frei Montalva, Antarctica, Southern Ocean, Polar Regions

Views of the Trinity Church at Belingshausen Russian Research Station, Antarctica, Southern Ocean, Polar Regions

Antarctic tern (Sterna vittata), on the wreck of the Guvernoren in the Enterprise Islands, Antarctica, Southern Ocean, Polar Regions

Antarctic tern (Sterna vittata), feeding in the Enterprise Islands, Antarctica, Southern Ocean, Polar Regions

Antarctic tern (Sterna vittata), on the wreck of the Guvernoren in the Enterprise Islands, Antarctica, Southern Ocean, Polar Regions

Brown capuchin monkey (Cebus apella) (Sapajus apella) on tree, Tambopata National Reserve, Puerto Maldonado, Tambopata Province, Madre de Dios, Peru, South America

Brown capuchin monkey (Cebus apella) (Sapajus apella) on tree, Tambopata National Reserve, Puerto Maldonado, Tambopata Province, Madre de Dios, Peru, South America

Adult bull southern elephant seal (Mirounga leonina) attempting to cool off by flinging sand on his back, South Georgia, Polar Regions

Southern elephant seal (Mirounga leonina) challenger bull head detail (notice shredded proboscis) at Gold Harbour, South Georgia, Polar Regions

Southern elephant seal (Mirounga leonina) bull holding adult female in the surf to mate with her, South Georgia, Polar Regions

Southern elephant seal (Mirounga leonina) bull holding adult female in the surf to mate with her, South Georgia, Polar Regions

Adelie penguin (Pygoscelis adeliae), feeding chick at breeding colony at Brown Bluff, Antarctic Peninsula, Antarctica, Polar Regions

View of tidewater glacier deep inside Neko Harbor on the western side of the Antarctic Peninsula, Southern Ocean, Polar Regions

Views of the wreck of the Guvernoren, a 20th century whale processing ship, in the Enterprise Islands, Antarctica, Polar Regions

Southern right whale (Eubalaena australis) flukes-up dive near whale watching boat in Puerto Pyramides, Argentina, South America

Southern right whale (Eubalaena australis) mother and calf near whale watching boat in Puerto Pyramides, Argentina, South America

Adult humpback whale (Megaptera novaeangliae) flukes-up dive in Inian Pass, Southeast Alaska, Pacific Ocean, United States of America, North America

View of snow-covered Half Moon Island in the South Shetland Group, Antarctica, Southern Ocean, Polar Regions

View of snow-covered Livingston Island viewed from Half Moon Island in the South Shetland Group, Antarctica, Polar Regions

Weddell Seal (Leptonychotes weddellii), hauled out on ice at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

A large pod of Gerlache Strait type B killer whales (Orcinus orca), traveling and socializing in Gerlache Strait, Antarctica, Polar Regions

The Mafra Palace Library, one of Europe's most important libraries, located in Mafra National Palace, UNESCO World Heritage Site, Lisbon region, Portugal, Europe

Adult Dall's porpoise (Phocoenoides dalli) surfacing with characteristic rooster tail splash in Johnstone Strait, British Columbia, Canada, North America

Adult Dall's porpoise (Phocoenoides dalli) surfacing with characteristic rooster tail splash in Johnstone Strait, British Columbia, Canada, North America

The remains of the camp where Fridtjof Nansen over-wintered with Hjalmar Johansen in 1895-96, Franz Josef Land, Russia, Arctic Ocean, Eurasia

Adult black-legged kittiwakes (Rissa tridactyla) on ice near Alexander Island in Franz Josef Land, Russia, Arctic Ocean, Eurasia

British Antarctic Survey (BAS) research plane landing at the Chilean Research base Frei on King George Island, Antarctica, Polar Regions

Expedition ship The Bremen operating from Ushuaia, Argentina to the Antarctic Peninsula in Antarctica, Polar Regions

A pod of killer whales (Orcinus orca) surfacing in Chatham Strait, Southeast Alaska, United States of America, Pacific Ocean, North America

A close up view of a beetle on hogweed (Heracleum spp) found in the Solovetsky Islands, Arkhangelsk Oblast, White Sea, Russia, Arctic, Europe

A newly discovered ivory gull (Pagophila eburnea) breeding colony on Alexander Island in Franz Josef Land, Russia, Eurasia

Chinstrap penguin (Pygoscelis antarctica), at breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

Humpback whale (Megaptera novaeangliae), surfacing off Half Moon Island in the South Shetland Island Group, Antarctica, Polar Regions

View of calm seas and icebergs with reflected mountains surrounding Damoy Point in Dorian Bay, Antarctica, Polar Regions

Chinstrap penguins (Pygoscelis antarctica), breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

Chinstrap penguins (Pygoscelis antarctica), breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

Southern elephant seals (Mirounga leonina), hauled out for their annual catastrophic molt (moult) on the beach at Snow Island, Antarctica, Polar Regions

Southern elephant seals (Mirounga leonina), hauled out for their annual catastrophic molt (moult) on the beach at Snow Island, Antarctica, Polar Regions

Views of the Chilean inactive research base Gonzalez Videla on Waterboat Point in Paradise Bay, Antarctica, Polar Regions

Southern elephant seals (Mirounga leonina), hauled out for their annual catastrophic molt (moult) on the beach at Snow Island, Antarctica, Polar Regions

View of Roald Amundsen monument sculpture at The Fram Museum, Bygdoynesveien, Oslo, Norway, Scandinavia, Europe

Adult black-legged kittiwakes (Rissa tridactyla) feeding at the base of a glacier in the Svalbard Archipelago, Norway, Arctic, Europe

The Global Seed Vault just outside the town of Longyearbyen on the island of Spitsbergen in Svalbard, Norway, Arctic, Europe

An adult polar bear (Ursus maritimus) swimming and hauling itself onto ice floe in the Svalbard Archipelago, Norway, Arctic, Europe

Curious adult bull walrus (Odobenus rosmarus rosmarus) approach the ship at Moffen Island in the Svalbard Archipelago, Norway, Arctic, Europe

Conservation work at the Great Hypostyle Hall in the Precinct of Amon-Re, Karnak Temple Complex, UNESCO World Heritage Site, Luxor, Egypt, North Africa, Africa

Captive Galapagos giant tortoise (Geochelone elephantopus) at the Charles Darwin Research Station, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Captive Galapagos giant tortoise (Geochelone elephantopus) at the Charles Darwin Research Station, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Schooling king angelfish (Holacanthus passer), underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Spotted eagle rays (Aetobatus narinari) underwater at Leon Dormido Island off San Cristobal Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Juvenile Galapagos hawk (Buteo galapagoensis) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Aerial of a little ship floating between the ice below the Eqi glacier, Western Greenland, Denmark, Polar Regions

Adult gentoo penguin (Pygoscelis papua), leaping off ice shelf at Cuverville Island, Antarctica, Southern Ocean, Polar Regions

Adult gentoo penguin (Pygoscelis papua), porpoising for swimming speed near the Antarctic Peninsula, Southern Ocean, Polar Regions

The Lindblad Expedition ship National Geographic Explorer near a glacier in the Svalbard Archipelago, Norway, Arctic, Europe

CT Ticknor, staff member from the Lindblad Expedition ship National Geographic Explorer using binoculars in the Svalbard Archipelago, Norway, Arctic, Europe

The Lindblad Expeditions ship National Geographic Sea Bird operating in Glacier Bay National Park, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America

Guest from the Lindblad Expeditions ship National Geographic Sea Bird on path beside a skull in Southeast Alaska, United States of America, North America

The Lindblad Expedition ship National Geographic Explorer pushing through ice in the Svalbard Archipelago, Norway, Arctic, Europe