Chihuahua Cooper Babb is dressed in a costume at the 7th annual Running of the Chihuahuas event on May 3, 2014, at the First Tennessee Pavilion in Chattanooga, Tenn. (Photo by Doug Strickland/AP Photo/Chattanooga Times Free Press)

Participants cross cold and muddy waters during the Strong Race competition near Tukums May 4, 2014. About 6500 people competed in this extreme running race, which includes cross-country running, elements of agility and power discipline. (Photo by Ints Kalnins/Reuters)

An Israeli army officer gives explanations to journalists during an army organised tour in a tunnel said to be used by Palestinian militants for cross-border attacks, July 25, 2014. (Photo by Jack Guez/Reuters)

Two rainbows emerge from a black storm above the mountains, on August 19, 2014, in Kingman, Arizona. Double tornadoes, lightning storms and rotating supercells – this is what it's like to chase storms for a year. These dramatic images show apocalyptic weather throughout 2014 from a lightning storm to a pair of rainbows. Roger Hill, 57, has been chasing storms in the United States for thirty years and runs a tour operation with his wife Caryn. His favourite photograph of the year was also one of the most difficult to get – as two violent tornadoes tore through Pilger, Nebraska on June 16. The spiraling winds killed a five-year-old girl and injured at least 19 others, and as Roger tried to get the perfect shot debris began to rain down on his car. (Photo by Roger Hill/Barcroft Media)

Sepak Takraw, ISTAF Super Series Finals Thailand 2014/2015, Nakhon Pathom Municipal Gymnasium, Huyjorake Maung, Nakonprathom, Thailand on October 20, 2015: Thailand's Sudaporn Palang in action during the group stage. (Photo by Asia Sports Ventures/Action Images via Reuters)

A creature bathes at the Robolights art installation by Kenny Irwin Jr. in Palm Springs, California December 15, 2014. The installation consists of hundreds of whimsical robot and other themed sculptures created from recycled materials including golf carts, kitchen appliances and microwaved smart phones, and is open to the public each holiday season on the sprawling Irwin family property. (Photo by David McNew/Reuters)

Miss Jamaica Kaci Fennell (L) and Miss Colombia Paulina Vega (L) compete during the swimsuit competition at the 2014 Miss Universe Final at the FIU Arena in Miami, USA, 25 January 2015. (Photo by Rhona Wise/EPA)

A Lebanese man carries an injured woman away from the site of a car bomb explosion in a Shiite area and stronghold of the Lebanese militant group Hezbollah at the southern suburb of Beirut, Thursday January 2, 2014. A large explosion has rocked a stronghold of the Shiite Hezbollah group in the southern suburbs of the Lebanese capital. (Photo by Hussein Malla/AP Photo)