Cienfuegos, Cuba.,A woman rides a bicycle in the historical center of Cienfuegos.
The Mall, Washington, District of Columbia, Fireworks display over the Lincoln Memorial and National Mall.
Jellyfish at Monterey Bay Aquarium.
Taylor Bay, Providenciales Island, Turks and Caicos Islands, A romantic couple holding hands as they walk in shallow water ne...
Taylor Bay, Providenciales Island, Turks and Caicos Islands, A romantic couple holding hands as they walk in shallow water near a beach.
Rockville, Montgomery County, Maryland, USA, A child enters his billing code to pay for his lunch.
Skies over Nesodden light up with electromagnetic activity.
The harbour bridge illuminated at night in Sydney, Australia.
San Ignacio Lagoon, Baja, Mexico.,An ecotourist reaching out to touch a gray whale, Eschrichtius robustus.
Providenciales Island, Turks and Caicos Islands, Colorful sign and paths leading to the restrooms at a restaurant.
Dubrovnik, Croatia, Dubrovnik's Old Town and city wall from Lovrijenac Fort on a stormy day.
Valley of the Peace Cemetery, Najaf, Iraq, Mourners offer prayers over a wrapped body in a coffin.
Manzanillo, Limon, Costa Rica.,A hooded mantis, Choeradodis rhombicollis, foraging on a leaf.
Mt. Kilimanjaro, Tanzania, Africa.,Aerial view of a caldera on the summit of Kibo, Mount Kilimanjaro.
Raj Ghat, New Delhi, India, The tomb of Mahatma Gandhi.
Vittorio Emanuele II Monument, Rome, Lazio, Italy, Giulio Monteverde's Il Pensiero at the Vittorio Emanuele II Monument.
Providenciales Island, Turks and Caicos Islands, A couple riding horses in turquoise Caribbean water along a beach.
San Simeon, California, A rock formation in the Pacific Ocean silhouetted at sunset.
Najaf, Iraq, An old Shiite woman's face stands out in an outdoor market.
Cuba, A man presses sugar cane stalks to get the garapa juice.
Dean's Blue Hole, Long Island, Bahama Islands, A diver at Dean's Blue Hole, the deepest oceanic hole in the world.
The Santa Fe National Forest, New Mexico, USA.,Aspen trees in fall along the Aspen Vista Trail on the Ski Basin Road.
Venice, Italy.,Gondoliers on the Grand Canal in Venice.
Venice, Italy, Buildings along the Grand Canal from the Rialto Bridge, Venice, Italy.
Baja California, Mexico, Octopus eggs in the Pacific Ocean at low tide.
Kufa, Iraq, A man in silhouette, paddles a canoe on the Euphrates River
A Burchell's zebra nurses her young.
A girl from the thighs down is reflected in a puddle.
Graubunden Canton, Chur, Switzerland, A building facade silhouetted by a large tree.
Rachel Carson Salt Pond Preserve, New Harbor, Maine, A dog whelk sitting on its prey, a barnacle, in a tidal pool.
Monte Alban, Oaxaca State, Mexico, A woman photographs the ruins of Monte Alban in Oaxaca State, Mexico.
Arenal Volcano erupting at dusk.
Galapagos National Park, Galapagos Islands, Ecuador.,A magnificent frigate bird soars above a boat in the Galapagos.
A lizard pauses on a rock.
Castillo de la Real Fuerza, Havana, Cuba, A bridge crosses the moat surrounding the Castillo de la Real Fuerza.
Carver, Massachusetts, USA, Autumn trees surround a pond in Carver.
Galapagos National Park, Galapagos Islands, Ecuador.,A Galapagos mockingbird perched in a tree in Galapagos National Park.
Lincoln Memorial, Washington, District of Columbia, United States.,A clear blue sky and morning light illuminate the Lincoln ...
Lincoln Memorial, Washington, District of Columbia, United States.,A clear blue sky and morning light illuminate the Lincoln Memorial.
A close up portrait of a house cat licking its nose.
Tully, Renvyle Peninsula, Connemara, County Galway, Ireland.,Dramatic sunlight silhouettes pedestrians as they walk down a la...
Tully, Renvyle Peninsula, Connemara, County Galway, Ireland.,Dramatic sunlight silhouettes pedestrians as they walk down a lane.
Kuna Yala, San Blas Islands, Panama.,A traditional Kuna house in the San Blas Islands.
Galapagos Islands National Park, Galapagos Islands, Ecuador.,A close-up of the blue beak of a blue-footed booby.
A small alligator rests on a log.
Zurich, Switzerland, Famous shopping area on Augustinergasse street in Zurich.
Wintry scene at high altitude, Beskid mountains in Central Europe.
Late afternoon sun breaks through storm clouds at Capitol Reef National Park, Utah, USA
Silhouette of steer against a sunset.
Makgadikgadi Pans National Park, Botswana, A meerkat, Suricata suricatta, on its hind legs keeping a look out.
Lettergesh East, Connemara, County Galway, Ireland, Wildflowers grow on a hillside overlooking an ocean inlet.
A portrait of a sunflower.
Boerner Botanical Gardens, Hales Corners, Wisconsin, United States.,A young woman assumes Reverse Warrior yoga pose on a wood...
Boerner Botanical Gardens, Hales Corners, Wisconsin, United States.,A young woman assumes Reverse Warrior yoga pose on a wooden bridge.
Siquirres, Limon, Costa Rica.,Portrait of a stick insect resting on a leaf in a rain forest.
A close up of a plant's seed head resembling a dandelion.
, Vogelkopf Peninsula, West Papua, New Guinea, Indonesia.
Five distant figures walk on a dune covered in patterned lines.
Osa Penninsula, Puntarenas, Limon, Costa Rica.,An argiope spider, Argiope argentata, wrapping a grasshopper in silk.
A glacier from the Columbia Ice Fields terminates at a cliff.
St Petersburg, Baltic Sea, Russia.,Detail of marble statue at the Russian Museum.
Two horses graze in morning mist.
Petersburg, Alaska, United States, A Papillon dog with prescription sunglasses sits in a bicycle basket.
A golden orb spider in its web.
Sognefjellsveien Road, Norway, A picturesque village in a mountain valley in south-central Norway.
Close up of a black cat's yellow eyes that seem to glow.
Milpe Bird Sanctuary, Ecuador.,A male club winged manakin with his characteristic red thatch.
Sinopah Mountain, Glacier National Park, Montana.,The moon shining over Sinopah Mountain at sunrise.
Fergusson Island, Milne Bay Province, Papua New Guinea.,Goldie's bird of paradise adult males at display site in the canopy p...
Fergusson Island, Milne Bay Province, Papua New Guinea.,Goldie's bird of paradise adult males at display site in the canopy performing their courtship display.
Highway 63, Mississippi, A highway flooded with heavy rain waters from Hurricane Isaac.
Saint Peter's Basilica, Vatican City, A view of the vaulted ceiling of Saint Peter's Basilica, Vatican City.
Vagaru Island, Shaviyani Atoll, Republic of the Maldives, A spa therapist at the Viceroy Resort on Vagaru Island.
Zurich, Switzerland, Architecture and flags in downtown Zurich.
Istanbul, Turkey.,Interior scene in the Grand Bazaar in the Bazaar District of Istanbul.
Charlotte, North Carolina, United States, A close up view of two red roses about to blossom.
Germantown, Maryland, Tracks in the snow on a path, Blizzard of 2010.
Basilica of Saint Paul Outside the Walls, Rome, Lazio, Italy.,The courtyard of the Basilica of Saint Paul Outside the Walls i...
Basilica of Saint Paul Outside the Walls, Rome, Lazio, Italy.,The courtyard of the Basilica of Saint Paul Outside the Walls in Rome.
Whirinaki Forest Park, New Zealand.,Te Urewera National Park, Whirinaki Forest Park.
Southernmost Point, Key West, Florida, Key West's most popular landmark and attraction the Southernmost Buoy.
Stocking Island, Great Exuma, Out Islands, Bahama Islands, Private yachts moored in Elizabeth Harbour off Stocking Island.
Tigibi, Southern Highlands Province, Papua New Guinea, An adult male superb bird of paradise displays on a log.
Tsarskoye Selo, (Pushkin), Russia.,A man climbing a staircase in the Bath House in the Catherine Palace.
Brookside Gardens, Wheaton, Maryland, A cluster of black-eyed Susan flowers, Rudbeckia hirta.
Kennebec River Valley, Maine, USA, A woman and dogs walking in a forest on a shallow, rocky, river bed.
Tari Valley, Southern Highlands Province, Papua New Guinea.,A female blue bird of paradise perches on a tree branch.
A campfire under the stars on an autumn night.
San Ignacio Lagoon, Baja, Mexico.,Tail flukes of a diving gray whale. A rope scar encircles the tail.
Central Park Zoo, New York City, New York, A red panda in the Central Park Zoo.
Milwaukee Art Museum, Milwaukee, Wisconsin, The Quadracci Pavilion by Calatrava at the Milwaukee Art Museum.
A river and forest covered by snow.
Venice, italy.,A man standing inside the church of Santi Giovanni e Paolo.
Mantua, Lombardy, Italy, Detail of the ceiling of the entrance of the Basilica di Sant' Andrea.
Istanbul, Turkey.,A cat sleeping on a bench in front of the Blue Mosque in Istanbul.
Charleston, West Virginia, USA.,A spider on its web at night.
Providenciales Island, Turks and Caicos Islands, A man taking a photo with iPhone; a person in distance gives an illusion of ...
Providenciales Island, Turks and Caicos Islands, A man taking a photo with iPhone; a person in distance gives an illusion of the man being a giant.
The barque Europa at anchor outside Port Lockroy.
Honopu Beach, Napali Coast, Kauai Island, Hawaiian Islands, An aerial view of Honopu Beach and arch on the Napali Coast.
Makgadikgadi Pans National Park, Botswana, A group of Kalahari bushmen gathered around a campfire.
Providenciales Island, Turks and Caicos Islands, An inflatable boat anchored in turquoise waters just off a beach.
Dubrovnik, Croatia, The city Clock Tower in Old Town, Dubrovnik, Croatia.
San Francisco Bay, California, Point Bonita Lighthouse at sunrise.
Kukoiula Harbor, Kauai Island, Hawaiian Islands, Aerial view of Kukoiula harbor and the Kulkoiula golf course.
Livermore, California, A landfill generates liquified natural gas.
Waimea Canyon, Kauai Island, Hawaiian Islands, Aerial view of Waimea Canyon and the surrounding eroded landscape.
Cozumel, Quintana Roo State, Mexico, Relaxing in a hammock on the beach in Cozumel.
Kilimanjaro, Serengeti National Park, Tanzania.,Burchell's zebra, Equus burchelli, roam Serengeti's vast plain.
Seeds rest in a notch of wood on a battleship's deck.
Purple crocuses amongst dead leaves.
Siquirres, Limon, Costa Rica.,The lemur tree frog, Agalychnis lemur, is a critically endangered frog.
Foula Island, Shetland Islands, Scotland, Great Britain, A bright red phone booth contrasts against an old stone building.
Tari Valley, Southern Highlands Province, Papua New Guinea.,A male blue bird of paradise performs practice display.
Gamboa, Panama.,An American crocodile (Crocodylus acutus) floats in a river.
The main temple of the Nan Hua Temple Complex, in South Africa.
Venice, Italy, Palaces on the Grand Canal.
An aerial view of Machu Picchu.
Palazzo Altemps, National Museum of Rome, Rome, Lazio, Italy, A sculpture in the courtyard of the Palazzo Altemps in Rome.
Erfoud, Western Sahara, Morocco, A worker carefully exposes a Trilobite from the surrounding rock.
A bluejay enjoys the day at the Botanical Gardens.
National Zoological Park, Washington, District of Columbia, African cheetah cubs, Acinonyx jubatus, play-fighting.
Siva Brada geyser with the Chapel of the Holy Cross in the background.
Charlotte, North Carolina, United States, Rails on steps create an abstract pattern of lines and angles.
Moonstone Beach, Cambria, California, Sunrise over the Pacific Ocean at the beach.
Kristianstad, Sweden, Biogas is used to fuel cars and municipal garbage trucks and buses.
Dillon Rock, Vancouver Island, British Columbia, Canada, A dive Boat cruises close to the Dillon Rock light marker.
Daniel Stowe Botanical Garden, Belmont, North Carolina, United States, Early morning light shines on a close up view of a Swi...
Daniel Stowe Botanical Garden, Belmont, North Carolina, United States, Early morning light shines on a close up view of a Swiss chard leaf.
Giant sand dunes tower above a hotel in the Sahara.
Long Island, Out Islands, Bahama Islands, A pilot refuels his PA 18 Super Cub on Long Island.
Andros Island, Out Islands, Bahama Islands, Scuba diving the Tongue of the Ocean off the Andros Barrier Reef.
National Zoological Park, Washington, District of Columbia, African cheetah cubs, Acinonyx jubatus, play-fighting.
Mustang, Nepal, Three iron daggers with curved wooden handles uncovered in a burial crypt.
Close up of a ruddy Abyssinian cat.
Tinganes District, Torshavn, Faroe Islands, Denmark, A traditional sod roof house overlooks the Atlantic Ocean.
Tiputini Biodiversity Station, Ecuador.,Display perch of a striped manakin.
New Berlin, Wisconsin, United States.,An abstract pattern formed by ice and red sangria in a cocktail glass.
A long row of Buddhist prayer wheels.
LeConte Bay, Alaska, United States.,Ice floes at sunrise in LeConte Bay.
Twilight over the historic city of Salzburg.
The Brooklyn Bridge and Manhattan Bridge over the East River.
Marrakech, Morocco, Kebabs, a popular Moroccan street food, steam on the grill.
Annapolis, Maryland, A ship and sea kayaks in a marina in Annapolis.
Atherton Tableland, Queensland, Australia.,A male Victoria's riflebird on display perch calling.
A close up of a drip from a kitchen faucet.
Baltimore, Maryland, United States.,A dragon flag holder with a green patina in Baltimore, Maryland.
Santo Domingo de Guzman Church, Oaxaca, Oaxaca State, Mexico, People stand outside the church of Santo Domingo de Guzman, in ...
Santo Domingo de Guzman Church, Oaxaca, Oaxaca State, Mexico, People stand outside the church of Santo Domingo de Guzman, in Oaxaca.
Santa Elena Reserve, Puntarenas, Costa Rica, A cluster of blue wildflowers in a rain forest.
George Town, Great Exuma, Out Islands, Bahama Islands, An Exuman farmer, and his granddaughter.
A chandelier hangs below the underside of a dome with ornate designs.
Rotorua, New Zealand.,A young Maori girl practices boxing.
Hunter, New York, United States, Hip Hop artists The Roots perform at Camp Bisco in Hunter, New York.
Rapperswil, Switzerland, Fresh carrots at a morning farmers market.
A laboratory beaker and a perfectly spherical drop of water.
Portrait of an arctic fox.
A surfer riding a wave on the Irish coast.
St Petersburg, Baltic Sea, Russia.,Woman celebrates with champagne during fashion week.
St Petersburg, Baltic Sea, Russia.,Backstage with fashion models preparing for a fashion show.
D'Aguilar National Park, Queensland, Australia, An adult male paradise riflebird performs a practice display.
A local fisherman sets a vertical trap while balancing on his boat.
Mustang, Nepal.,A scientist enters a maze of rooms in a looted cave near Chuksang.
Najaf, Iraq, Shiite worshipers attend Friday prayers at Imam Ali Mosque in Najaf.
Venice, Italy, Detail of the Palazzo Ducale in Piazza San Marco, Venice, Italy
Venice, Italy, Gothic arched windows along the Grand Canal near the Rialto Bridge.
An egret appears to fly to the moon at dusk.
Yellowstone National Park, Wyoming.,A herd of bison, Bison bison, on the move at the end of the day.
Alaska, A spruce grouse, Falcipennis canadensis, in colorful vegetation.
Oak Bluffs, Martha's Vineyard, Massachusetts, USA, A car sits in a driveway lit by a lamppost, Oak Bluffs.
Alaska, A grizzly bear and cub, Ursus arctos, in a snow shower.
Galapagos National Park, Galapagos Islands, Ecuador.,The deadly fruit of a manchineel tree in Galapagos National Park.
A portrait of a white mouth moray eel.
Providenciales Island, Turks and Caicos Islands, A man pours sand from a bucket as he builds a sandcastle on a beach.
An infrared HDR image of a frozen Lake Cayuga in New York.
Byrd Park, Richmond, Virginia, Barack Obama at his presidential campaign rally at the VCU Siegel Center.
Carver, Massachusetts, USA, An autumn tree surrounds a pond in Carver.
Venice, Italy, Domes of the Basilica di San Marco in Piazza San Marco, Venice, Italy.
Martha's Vineyard, Massachusetts, USA, A man fishes on Lucy Vincent Beach under the clay cliffs of Gay Head.
Germantown, Maryland, United States.,An American Bullfrog, Rana catesbeiana, peeks out through duckweed.
A boat cruises along a channel in northern Poland.
Saint Peter's Basilica, Vatican City, A view of the ornate ceiling in Saint Peter's Basilica.
A Harbor Seal fishing along the shore in Kachemak Bay, Alaska.
Jaipur, Rajasthan, India, Palace of the Winds in Jaipur, Rajasthan.
Danmark Island, Greenland, A photographer stands on a rock outcrop to shoot a remote landscape.
Whitehorse, Yukon Territory, Canada, A hiker walking through deep snow in an evergreen forest.
Casablanca, Morocco.,Savory Berber style chicken tagine with olives at Restaurant Zayna.
Lahaina, Maui Island, Hawaiian Islands, Aerial view of the coast and boat harbor at Lahaina.
Isla Mujeres, Quintanaroo State, Mexico, Remoras cling to a whale shark's large tail.
India, Brightly colored clothing hangs on a line outside a building.
A series of fern fronds hanging next to one another.
Ristorante Terme de Diocleziano, Rome, Lazio, Italy.,Pasta with seafood.
Giant sand dunes in the Egyptian desert.
Lombok Island, Indonesia, Portrait of long-tailed macaque, Macaca fascicularis, eating a peanut.
MukTuk Kennels, Whitehorse, Yukon Territory, Canada, A sled dog waits atop a kennel for the next sled pull.
A kingfisher perches on a branch with a fresh fish.
San Simeon, California, Northern elephant seals, Mirounga angustirostris, sleeping in a rookery.
San Simeon, California, Male, female, and young northern elephant seals at a rookery.
Lombok Island, Indonesia, Portrait of alert long-tailed macaque, Macaca fascicularis, in a tree.
A close view of an immaculate sunflower.
Inle Lake, Shan State, Burma/Myanmar, A woman works while sitting on her canoe in the floating gardens.
Piazza della Rotonda, Rome, Lazio, Italy, Water flows from Giacomo Della Porta's Fontana del Pantheon in Rome.
Port Royal, Cat Island, Out Islands, Bahama Islands, Pamela Poitier, daughter of the Bahamian actor Sidney Poitier.
Angkor Wat, Siem Reap, Cambodia.,Young monks in Angkor Wat, Siem Reap region of Cambodia.
Kilimanjaro, Serengeti National Park, Tanzania.,A grey heron, Ardea cinerea, stands in Serengeti's shallow waters.
Rockville, Montgomery County, Maryland, USA.,A tray of peanut butter and jelly sandwiches on whole wheat bread.
Mustang, Nepal, Small multicolored glass beads were attached to a cloth hood fastened to a gold-and-silver death mask.