July 29, 2014
From Scenes From 21st-Century China, one of 36 photos. A resident walks along a railway track surrounded by trees on both sides, in Nanjing, Jiangsu province, on June 15, 2014. (Reuters/Stringer)

From Scenes From 21st-Century China, one of 36 photos. A resident walks along a railway track surrounded by trees on both sides, in Nanjing, Jiangsu province, on June 15, 2014. (Reuters/Stringer)

July 28, 2014
From Eid al-Fitr and the end of Ramadan 2014, one of 38 photos. Here, people ride in Bumper cars during an Eid celebration in Burgess Park in London, England, on July 28, 2014. The Muslim holiday Eid marks the end of 30 days of dawn-to-sunset fasting during the holy month of Ramadan. (Dan Kitwood/Getty Images)

From Eid al-Fitr and the end of Ramadan 2014, one of 38 photos. Here, people ride in Bumper cars during an Eid celebration in Burgess Park in London, England, on July 28, 2014. The Muslim holiday Eid marks the end of 30 days of dawn-to-sunset fasting during the holy month of Ramadan. (Dan Kitwood/Getty Images)

June 26, 2014
From NASA’s New Orion Spacecraft and Space Launch System, one of 35 photos. Three 300-pound main parachutes gently lower a mockup Orion capsule to the ground during a test at the U.S. Army Yuma Proving Ground in Arizona, on December 20, 2012. The Orion Multi-Purpose Crew Vehicle (MPCV) is NASA’s next manned spacecraft, currently in development, with an unmanned orbital test flight scheduled for December 2014. (NASA)

From NASA’s New Orion Spacecraft and Space Launch System, one of 35 photos. Three 300-pound main parachutes gently lower a mockup Orion capsule to the ground during a test at the U.S. Army Yuma Proving Ground in Arizona, on December 20, 2012. The Orion Multi-Purpose Crew Vehicle (MPCV) is NASA’s next manned spacecraft, currently in development, with an unmanned orbital test flight scheduled for December 2014. (NASA)

June 24, 2014
From 2014 National Geographic Traveler Photo Contest, Part II, one of 28 photos. Kilauea, Big Island, Hawaii. The most extreme place we put our kayakers to paddle to date. (© Alexandre Socci/National Geographic Traveler Photo Contest)

From 2014 National Geographic Traveler Photo Contest, Part II, one of 28 photos. Kilauea, Big Island, Hawaii. The most extreme place we put our kayakers to paddle to date. (© Alexandre Socci/National Geographic Traveler Photo Contest)

May 21, 2014
From Viewing the Earth From Space, one of 28 photos. One of the Expedition 39 crew members aboard the International Space Station used a 14mm lens on a digital still camera to photograph this pre-winter storm located just off the coast of southwestern Australia on March 29, 2014. A solar array panel on the orbital outpost is in the left side of the frame. (NASA)

From Viewing the Earth From Space, one of 28 photos. One of the Expedition 39 crew members aboard the International Space Station used a 14mm lens on a digital still camera to photograph this pre-winter storm located just off the coast of southwestern Australia on March 29, 2014. A solar array panel on the orbital outpost is in the left side of the frame. (NASA)

May 15, 2014
From Cats Dressed as People, 100 Years Ago, one of 15 photos. The Aviator. (Harry Whittier Frees/Library of Congress)

From Cats Dressed as People, 100 Years Ago, one of 15 photos. The Aviator. (Harry Whittier Frees/Library of Congress)

May 8, 2014
From Truth or Consequences Spaceport, one of 19 photos. Spaceport America’s Virgin Galactic Gateway to Space Building, photographed near Truth or Consequences, New Mexico on May 1, 2014. The world’s first purpose-built commercial space base and soon-to-be site of the first space flights with Sir Richard Branson’s Virgin Galactic is situated near the town of Truth or Consequences in New Mexico. The inaugural flight into suborbital space should happen later this year and the first astronauts, who have made reservations and paid $250,000 for the flight, should follow a month later. While it’s not clear what the economic impact will be, many agree that Spaceport America should inject new energy into the town. (Reuters/Lucy Nicholson)

From Truth or Consequences Spaceport, one of 19 photos. Spaceport America’s Virgin Galactic Gateway to Space Building, photographed near Truth or Consequences, New Mexico on May 1, 2014. The world’s first purpose-built commercial space base and soon-to-be site of the first space flights with Sir Richard Branson’s Virgin Galactic is situated near the town of Truth or Consequences in New Mexico. The inaugural flight into suborbital space should happen later this year and the first astronauts, who have made reservations and paid $250,000 for the flight, should follow a month later. While it’s not clear what the economic impact will be, many agree that Spaceport America should inject new energy into the town. (Reuters/Lucy Nicholson)

May 1, 2014
From Upside Down Houses, one of 15 photos. Laborers work at an upside-down house under construction in Fengjing Ancient Town, Jinshan District, south of Shanghai, China, on March 17, 2014. Workers are putting the final touches on this eccentric tourist attraction built at the “China Folk Painting Village”. (Reuters/Carlos Barria)

From Upside Down Houses, one of 15 photos. Laborers work at an upside-down house under construction in Fengjing Ancient Town, Jinshan District, south of Shanghai, China, on March 17, 2014. Workers are putting the final touches on this eccentric tourist attraction built at the “China Folk Painting Village”. (Reuters/Carlos Barria)

April 25, 2014
From 2014 National Geographic Traveler Photo Contest, one of 30 photos. Mirror Wave. The Wave at the Vermillion Cliffs National Monument (Arizona/Utah), after a heavy thunderstorm with a small pond granting a perfect mirror for the reflection of the hiker. A calm and solemn place at a perfect day. (© Nicholas Roemmelt/National Geographic Traveler Photo Contest)

From 2014 National Geographic Traveler Photo Contest, one of 30 photos. Mirror Wave. The Wave at the Vermillion Cliffs National Monument (Arizona/Utah), after a heavy thunderstorm with a small pond granting a perfect mirror for the reflection of the hiker. A calm and solemn place at a perfect day. (© Nicholas Roemmelt/National Geographic Traveler Photo Contest)

April 21, 2014
From The Easter Rocket War of Vrontados, one of 26 photos. Rockets fly over bell tower of Agios Markos church during Greek Orthodox Easter celebrations on the eastern Aegean island of Chios on April 26, 2008. Two rival parishes of Vrontados village fire thousands of rockets every Easter Saturday aiming at the opposing church’s bell tower in a centuries-old tradition. (Reuters/Yiorgos Karahalis)

From The Easter Rocket War of Vrontados, one of 26 photos. Rockets fly over bell tower of Agios Markos church during Greek Orthodox Easter celebrations on the eastern Aegean island of Chios on April 26, 2008. Two rival parishes of Vrontados village fire thousands of rockets every Easter Saturday aiming at the opposing church’s bell tower in a centuries-old tradition. (Reuters/Yiorgos Karahalis)

April 15, 2014
From Scenes of Spring, one of 28 photos. Thousands of Bluebells bloom, carpeting a forest near Halle, south of Brussels, Belgium, on April 15, 2014. (AP Photo/Yves Logghe)

From Scenes of Spring, one of 28 photos. Thousands of Bluebells bloom, carpeting a forest near Halle, south of Brussels, Belgium, on April 15, 2014. (AP Photo/Yves Logghe)

April 9, 2014
From Smithsonian Magazine’s 2013 Photo Contest, one of 16 photos. Finalist, Natural World category. A coastal brown bear hunts for salmon on Silver Salmon Creek in Lake Clark National Park and Preserve. Photographed by Daniel D’Auria of Tabernacle, New Jersey. (© Smithsonian.com)

From Smithsonian Magazine’s 2013 Photo Contest, one of 16 photos. Finalist, Natural World category. A coastal brown bear hunts for salmon on Silver Salmon Creek in Lake Clark National Park and Preserve. Photographed by Daniel D’Auria of Tabernacle, New Jersey. (© Smithsonian.com)

April 8, 2014
From London and the U.K. From Above, one of 24 photos. Here, an aerial shot of St Michael’s Mount, situated just off the Mount’s Bay coast of Cornwall. (© Jason Hawkes)

From London and the U.K. From Above, one of 24 photos. Here, an aerial shot of St Michael’s Mount, situated just off the Mount’s Bay coast of Cornwall. (© Jason Hawkes)

April 7, 2014
From Nyepi, the Balinese ‘Day of Silence’, one of 27 photos. A Balinese man hits another with a burned coconut husk during the “Mesabatan Api” ritual a head of Nyepi Day in Gianyar, Bali, Indonesia, on March 30, 2014. Mesabatan Api is held annually a day before the Nyepi Day of Silence, symbolizing the purification of the universe and human body through fire. Nyepi is a Hindu celebration observed every new year according to the Balinese calendar. The national holiday is one of self-reflection and meditation — activities such as working, watching television or traveling are restricted between the hours of 6 a.m. and 6 p.m.

From Nyepi, the Balinese ‘Day of Silence’, one of 27 photos. A Balinese man hits another with a burned coconut husk during the “Mesabatan Api” ritual a head of Nyepi Day in Gianyar, Bali, Indonesia, on March 30, 2014. Mesabatan Api is held annually a day before the Nyepi Day of Silence, symbolizing the purification of the universe and human body through fire. Nyepi is a Hindu celebration observed every new year according to the Balinese calendar. The national holiday is one of self-reflection and meditation — activities such as working, watching television or traveling are restricted between the hours of 6 a.m. and 6 p.m.

April 2, 2014
From A Trip to Lesotho, the ‘Kingdom of the Sky’, one of 21 photos. The mountains of the Sani Pass in the Drakensberg Mountains, between South Africa and Lesotho, on May 26, 2007. (CC BY SA Mark Peacock)

From A Trip to Lesotho, the ‘Kingdom of the Sky’, one of 21 photos. The mountains of the Sani Pass in the Drakensberg Mountains, between South Africa and Lesotho, on May 26, 2007. (CC BY SA Mark Peacock)