In this October 14, 2013 photo, ecology professor Ricardo Freitas catches a broad-snouted caiman to examine, then release back into the water channel in the affluent Recreio dos Bandeirantes suburb of Rio de Janeiro, Brazil. Caimans are like tanks, a very old species with a remarkable capacity for renovation that allows them to survive under extreme conditions where others couldn't, said Freitas, who runs the Instituto Jacare, or the Caiman Institute, which aims to protect the reptiles. (Photo by Felipe Dana/AP Photo)

Iranian mourners cover themselves with mud during Ashoura, marking the death anniversary of Imam Hussein, the grandson of Islam's Prophet Muhammad, at the city of Bijar, west of the capital Tehran, Iran, Thursday, November 14, 2013. Hussein, one of Shiite Islam's most beloved saints, was killed in a 7th century battle at Karbala, Iraq. (Photo by Ebrahim Noroozi/AP Photo)

A giant Uncle Sam balloon is marched down 6th Avenue during the 87th Annual Macy's Thanksgiving Day Parade, Thursday, November 28, 2013, in New York. After fears the balloons could be grounded if sustained winds exceeded 23 mph, Snoopy, Spider-Man and the rest of the iconic balloons received the all-clear from the New York Police Department to fly between Manhattan skyscrapers on Thursday. (Photo by John Minchillo/AP Photo)

In celebration of the Spring Solstice 2013 and in conjunction with the release of Dreamworks’ 3D animation The Croods – a family animation centered around the first ever pre historic road trip – a giant monument was built at Stonehenge at sunrise on Tuesday March 19, 2013. This marks the first time a modern structure has Ever been allowed on this historic site. (Photo by Flashforwardpublicity.com)

Smoke rises from a house days after part of the ground it was resting on collapsed into Lake Whitney, Texas in this June 13, 2014 file photo. I was covering the controlled burn of a house slowly falling into Lake Whitney due to the decaying cliff underneath. Asked to take photos from an aerial perspective, an instructor and I took off from Grand Prairie Municipal Airport around 9am. The burn, scheduled to start an hour later, was delayed. I love flying, but patience proved challenging as circling for nearly three hours gets boring fast. Once the fire started we only had 15 minutes to take photos because the plane was booked at 1pm. The owners invested their retirement savings in the house and were even advised by geologists that the ground was stable. To watch your investment literally go up in flames must take its toll emotionally. The owners said they don't expect their insurance to cover the loss. (Photo and caption by Brandon Wade/Reuters)

Martin Rietze is a “volcano-chaser”, a particular breed of photographer who takes big risks for big shots. He was able to capture destructive and beautiful forces of nature at work on a trip to Japan in February 2013. His photos show the Sakurajima Volcano, an active volcanic who's record-breaking 1914 eruption sent lava flows across the island. (Photo by Martin Rietze/Guzelian)

“Bombay’s once ubiquitous Premier Padmini taxis were introduced in the 60s and are dwindling at an alarming rate. This follows a decree banning vehicles over 25 years old from the streets to be replaced with “modern alternatives”. In a few years these iconic workhorses will be gone from Bombay’s streets altogether. It is important to capture this before it disappears and I see the road wallah's cabs as the time capsules that allow me to do this”. – Dougie Wallace, Bombay India, March, 2013. (Photo by Dougie Wallace)

Long-tailed mayflies (Palingenia longicauda) at Tisza river near Tiszainoka 135km (84 miles) southeast of Budapest, June 23, 2013. Millions of these short-lived mayflies engage in a frantic rush to mate and reproduce before they perish in just a few hours during “Tiszaviragzas” or Tisza blooming season from late spring to early summer every year. (Photo by Laszlo Balogh/Reuters)