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)

As these Cafe Taina Coffee ads explicitly assert, there are "times when sleeping is not an option."
Executed by Giovanni + Draft FCB, this animated advertising campaign captures two situations in which awareness is of necessity: when you're trapped in a jail cell with a large creepy inmate, and when a fellow castaway is equally prepared to resort to cannibalism as you are. It's very lucky that the cartoon characters in the Cafe Taina Coffee ads had a bag of the grind handy, or one tired blink may have been their last.

A mushroom cloud dwarfs a row of skyscrapers in what looks like a devastating nuclear bomb detonation. But thankfully this is just a spectacular weather-front blasting in from the tempestuous Rocky Mountains near Denver, Colorado, USA. The unbelievable shot is just one of many of the city's skyline taken by photographer Greg Thow. The 49-year-old has also captured equally stunning shots of lightning blasts and arching rainbows – all from the comfort of his balcony. (Photo by Greg Thow/Barcroft Media)

Assistant Manager Jayesh Vaghela brushes a vintage silk top hat at Lock & Co. Hatters on March 22, 2011 in London, England. Founded in St. James's in 1676, when Charles II was on the throne, this family owned business has provided hats for Royalty and the gentry for over 300 years. Staff report that sales of formal hats are booming ahead of the wedding of Prince William and Kate Middleton in Westminster Abbey on April 29, 2011.

“The Siege of Sidney Street, popularly known as the “Battle of Stepney”, was a notorious gunfight in London's East End on the 2nd of January 1911. Preceded by the Houndsditch Murders, it ended with the deaths of two members of a supposedly politically-motivated gang of burglars supposedly led by Peter Piatkow, a.k.a. “Peter the Painter”, and sparked a major political row over the involvement of the then Home Secretary, Winston Churchill”. – Wikipedia

Photo: Scots Guards and police on duty during the “Siege of Sidney Street” in east London. (Photo by Central Press/Getty Images). 3rd January 1911

(R-L) Jean-Jacques Cattier and his son Alexandre Cattier pose with the world largest bottle of Champagne “The Midas” by Armand de Brignac on April 6, 2011 in Berlin, Germany. The Midas is a massive 30-liter vessel and weights exactly 100 pounds. It's like having 40 pieces of the 750ml in one. Number one champagne brand in the world, Armand de Brignac is the luxury Champagne from the award-winning Champagne Cattier chateau of Chigny-les-Roses, France. (Photo by Andreas Rentz/Getty Images)