March 27, 2014
From California’s Historic Drought, one of 25 photos. Houseboats are docked at Bridge Bay in Shasta Lake, which is 100 feet (30 meters) below its normal levels, in Shasta, California, on January 23, 2014. Now in its third straight year of drought conditions, California is experiencing its driest year on record, dating back 119 years, and reservoirs throughout the state have very low water levels. (Reuters/Robert Galbraith)

From California’s Historic Drought, one of 25 photos. Houseboats are docked at Bridge Bay in Shasta Lake, which is 100 feet (30 meters) below its normal levels, in Shasta, California, on January 23, 2014. Now in its third straight year of drought conditions, California is experiencing its driest year on record, dating back 119 years, and reservoirs throughout the state have very low water levels. (Reuters/Robert Galbraith)

March 26, 2014
From St. Petersburg From Above, one of 12 photos. The Church of the Savior on Spilled Blood during a squally autumn morning. The church marks the spot where the reformist Tsar Alexander II was assassinated by a bomb-rolling revolutionary. (Amos Chapple/Rex Features)

From St. Petersburg From Above, one of 12 photos. The Church of the Savior on Spilled Blood during a squally autumn morning. The church marks the spot where the reformist Tsar Alexander II was assassinated by a bomb-rolling revolutionary. (Amos Chapple/Rex Features)

March 25, 2014
From At Least 14 Dead in Washington State Mudslide, one of 16 photos. An aerial photo taken Monday, March 24, 2014, shows the massive mudslide that killed at least 14 people on Saturday and left dozens missing, near Oso, Washington. The search for survivors grew this week, raising fears that the death toll could climb far beyond the eight confirmed fatalities. (AP Photo/Ted S. Warren)

From At Least 14 Dead in Washington State Mudslide, one of 16 photos. An aerial photo taken Monday, March 24, 2014, shows the massive mudslide that killed at least 14 people on Saturday and left dozens missing, near Oso, Washington. The search for survivors grew this week, raising fears that the death toll could climb far beyond the eight confirmed fatalities. (AP Photo/Ted S. Warren)

March 24, 2014
From The Exxon Valdez Oil Spill: 25 Years Ago Today, one of 39 photos. The damaged oil tanker Exxon Valdez, towed out of Alaska’s Prince William Sound by a tugboat and a U.S. Coast Guard Cutter, on June 23, 1989. On March 24, 1989, the tanker ran hard aground on Bligh Reef, spilling 11 million gallons of crude oil into the sound — at the time, the largest oil spill disaster in U.S. history. (AP Photo/Al Grillo)

From The Exxon Valdez Oil Spill: 25 Years Ago Today, one of 39 photos. The damaged oil tanker Exxon Valdez, towed out of Alaska’s Prince William Sound by a tugboat and a U.S. Coast Guard Cutter, on June 23, 1989. On March 24, 1989, the tanker ran hard aground on Bligh Reef, spilling 11 million gallons of crude oil into the sound — at the time, the largest oil spill disaster in U.S. history. (AP Photo/Al Grillo)

March 21, 2014
From The First Day of Spring, one of 26 photos. A Palestinian man and his daughter pick wild mustard flowers, which grow in open fields across the Gaza Strip, on March 20, 2014, as the official start of spring was marked by the by the Vernal Equinox. (Mohammed Abed/AFP/Getty Images)

From The First Day of Spring, one of 26 photos. A Palestinian man and his daughter pick wild mustard flowers, which grow in open fields across the Gaza Strip, on March 20, 2014, as the official start of spring was marked by the by the Vernal Equinox. (Mohammed Abed/AFP/Getty Images)

March 19, 2014
From In Syria: Three Years of War, one of 37 photos. This picture taken the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) shows residents of the besieged Palestinian camp of Yarmouk, queuing to receive food supplies, in Damascus, Syria, on January 31, 2014. A United Nations official is calling on warring sides in Syria to allow aid workers to resume distribution of food and medicine in a Palestinian district of Damascus. The call comes as U.N. Secretary General Ban Ki-Moon urged Syrian government to authorize more humanitarian staff to work inside the country, devastated by its 3-year-old conflict. (AP Photo/UNRWA)

From In Syria: Three Years of War, one of 37 photos. This picture taken the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) shows residents of the besieged Palestinian camp of Yarmouk, queuing to receive food supplies, in Damascus, Syria, on January 31, 2014. A United Nations official is calling on warring sides in Syria to allow aid workers to resume distribution of food and medicine in a Palestinian district of Damascus. The call comes as U.N. Secretary General Ban Ki-Moon urged Syrian government to authorize more humanitarian staff to work inside the country, devastated by its 3-year-old conflict. (AP Photo/UNRWA)

March 18, 2014
From Winners of the 2014 Sony World Photography Awards, Part I, one of 24 photos. Winner, Hong Kong, National Awards: In July each year, a heart-pounding scene of wildebeest migration repeats itself in Kenya. (© Chi Hung Cheung, 2014 Sony World Photography Awards)

From Winners of the 2014 Sony World Photography Awards, Part I, one of 24 photos. Winner, Hong Kong, National Awards: In July each year, a heart-pounding scene of wildebeest migration repeats itself in Kenya. (© Chi Hung Cheung, 2014 Sony World Photography Awards)

March 17, 2014
From Holi 2014: The Festival of Colors, one of 24 photos. Young Indians adorned with colored powder take part in celebrations for the spring festival of Holi in Bhubaneswar on March 16, 2014. Holi, the popular Hindu spring festival of colors is observed in India at the end of the winter season on the last full moon of the lunar month. (Asit Kumar/AFP/Getty Images)

From Holi 2014: The Festival of Colors, one of 24 photos. Young Indians adorned with colored powder take part in celebrations for the spring festival of Holi in Bhubaneswar on March 16, 2014. Holi, the popular Hindu spring festival of colors is observed in India at the end of the winter season on the last full moon of the lunar month. (Asit Kumar/AFP/Getty Images)

March 13, 2014
From In Turkey, Renewed Anti-Government Protests, one of 38 photos. A young woman, held after she was wounded during clashes between riot police and protestors after the funeral of Berkin Elvan, a 15-year-old boy who died from injuries suffered during last year’s anti-government protests in Istanbul on March 12, 2014. Riot police fired tear gas and water cannons at protestors in the capital Ankara, while in Istanbul, crowds shouting anti-government slogans lit a huge fire as they made their way to a cemetery for the burial of Elvan. (Bulent Kilic/AFP/Getty Images)

From In Turkey, Renewed Anti-Government Protests, one of 38 photos. A young woman, held after she was wounded during clashes between riot police and protestors after the funeral of Berkin Elvan, a 15-year-old boy who died from injuries suffered during last year’s anti-government protests in Istanbul on March 12, 2014. Riot police fired tear gas and water cannons at protestors in the capital Ankara, while in Istanbul, crowds shouting anti-government slogans lit a huge fire as they made their way to a cemetery for the burial of Elvan. (Bulent Kilic/AFP/Getty Images)

March 12, 2014
From Japan in the 1950s, one of 39 photos. A young Japanese woman in a kimono takes part in the Hula-Hoop craze that swept America and Japan in this October 30, 1958 picture. (AP Photo/Mitsunori Chigita)

From Japan in the 1950s, one of 39 photos. A young Japanese woman in a kimono takes part in the Hula-Hoop craze that swept America and Japan in this October 30, 1958 picture. (AP Photo/Mitsunori Chigita)

March 11, 2014
From "Believed to Be Russian Soldiers", one of 38 photos. A uniformed man, wearing no insignia or identifying marks, but believed to be a Russian serviceman, stands on guard outside a Ukrainian military base in the village of Perevalnoye outside Simferopol, on March 5, 2014. Ukraine’s foreign minister said his country feels like it’s almost in a state of war after Russian forces took effective control of Ukraine’s Crimean Peninsula. (Reuters/Vasily Fedosenko)

From "Believed to Be Russian Soldiers", one of 38 photos. A uniformed man, wearing no insignia or identifying marks, but believed to be a Russian serviceman, stands on guard outside a Ukrainian military base in the village of Perevalnoye outside Simferopol, on March 5, 2014. Ukraine’s foreign minister said his country feels like it’s almost in a state of war after Russian forces took effective control of Ukraine’s Crimean Peninsula. (Reuters/Vasily Fedosenko)

March 10, 2014
From The 2014 Winter Paralympics, one of 37 photos. Here, Arly Velasquez of Mexico competes in the Men’s Super G Sitting Skiing race, on day two of the 2014 Paralympic Winter Games at Rosa Khutor Alpine Center in Sochi, Russia, on March 9, 2014. (Hannah Peters/Getty Images)

From The 2014 Winter Paralympics, one of 37 photos. Here, Arly Velasquez of Mexico competes in the Men’s Super G Sitting Skiing race, on day two of the 2014 Paralympic Winter Games at Rosa Khutor Alpine Center in Sochi, Russia, on March 9, 2014. (Hannah Peters/Getty Images)

March 8, 2014
From International Women’s Day: Mothers and Daughters, one of 33 photos. Niculina Fieraru, 39, with her daughter Flori Gabriela Dumitrache, 13, in their room in Gura Sutii village, Romania, on February 25, 2014. Niculina Fieraru is unemployed and has two children. She hopes that her daughter Flori Gabriela will become a seamstress. Flori Gabriela wants to become a pop singer and she hopes to go to high school in a town 23 km (14 mi) away, but her family cannot afford to pay for it. A Romanian NGO has offered a scholarship to make this possible. On March 8, activists around the globe celebrate International Women’s Day, which dates back to the beginning of the 20th century and has been observed by the United Nations since 1975. The UN writes that it is an occasion to commemorate achievements in women’s rights and to call for further change. (Reuters/Bogdan Cristel)

From International Women’s Day: Mothers and Daughters, one of 33 photos. Niculina Fieraru, 39, with her daughter Flori Gabriela Dumitrache, 13, in their room in Gura Sutii village, Romania, on February 25, 2014. Niculina Fieraru is unemployed and has two children. She hopes that her daughter Flori Gabriela will become a seamstress. Flori Gabriela wants to become a pop singer and she hopes to go to high school in a town 23 km (14 mi) away, but her family cannot afford to pay for it. A Romanian NGO has offered a scholarship to make this possible. On March 8, activists around the globe celebrate International Women’s Day, which dates back to the beginning of the 20th century and has been observed by the United Nations since 1975. The UN writes that it is an occasion to commemorate achievements in women’s rights and to call for further change. (Reuters/Bogdan Cristel)

March 5, 2014
From The Jihad Museum: Afghanistan Remembers the Soviet Invasion, one of 17 photos. Museum assistant and former Soviet soldier, Sheikh Abdullah looks at a display in the Manzar-e Jahad, or Jihad Museum, which depicts the Soviet invasion of 1979 and the Afghan resistance, in Herat, on February 15, 2014. Sheikh Abdullah, who was a Soviet intelligence officer by the name of Khakimov Bakhrodin, was captured after being injured in battle with the Mujahideen. Abdullah stayed with his captors, converted to Islam and was renamed Abdullah. He never returned to his former homeland and now works at the Jihad Museum. (Aref Karimi/AFP/Getty Images)

From The Jihad Museum: Afghanistan Remembers the Soviet Invasion, one of 17 photos. Museum assistant and former Soviet soldier, Sheikh Abdullah looks at a display in the Manzar-e Jahad, or Jihad Museum, which depicts the Soviet invasion of 1979 and the Afghan resistance, in Herat, on February 15, 2014. Sheikh Abdullah, who was a Soviet intelligence officer by the name of Khakimov Bakhrodin, was captured after being injured in battle with the Mujahideen. Abdullah stayed with his captors, converted to Islam and was renamed Abdullah. He never returned to his former homeland and now works at the Jihad Museum. (Aref Karimi/AFP/Getty Images)

March 4, 2014
From The Ivanpah Solar Electric Generating System, one of 18 photos. An aerial view of a solar receiver and boiler atop a tower at the Ivanpah Solar Electric Generating System (SEGS) in the Mojave Desert in California near Primm, Nevada, on February 20, 2014. The largest solar thermal power-tower system in the world, owned by NRG Energy, Google and BrightSource Energy, opened last month in the Ivanpah Dry Lake and uses 347,000 computer-controlled mirrors to focus sunlight onto boilers on top of three 459-foot towers, where water is heated to produce steam to power turbines providing power to more than 140,000 California homes. (Ethan Miller/Getty Images)

From The Ivanpah Solar Electric Generating System, one of 18 photos. An aerial view of a solar receiver and boiler atop a tower at the Ivanpah Solar Electric Generating System (SEGS) in the Mojave Desert in California near Primm, Nevada, on February 20, 2014. The largest solar thermal power-tower system in the world, owned by NRG Energy, Google and BrightSource Energy, opened last month in the Ivanpah Dry Lake and uses 347,000 computer-controlled mirrors to focus sunlight onto boilers on top of three 459-foot towers, where water is heated to produce steam to power turbines providing power to more than 140,000 California homes. (Ethan Miller/Getty Images)