Some of London's telephone operators and engineers, trying out their gas masks at the anti-gas civilian training centre in Gloucester, where they were taught how to deal with gas attacks. (Photo by Harry Todd/Fox Photos/Getty Images). 13th February 1937

The combination of two different drawing styles in one picture never ceases to amaze us. The works of Allison Kunath are a vivid example of this technique. The background of her pictures is drawn using watercolors, while the actual image is broken down into rough geometrical shapes. This creates a very striking contrast, thanks to black, bold lines of the image on the forefront drawn over soft, cloudy shades of color. The skill of Allison is clearly seen in the way she manages to draw something as amorphous as a squid without making any curved lines. (Photo by Allison Kunath)

Indian dancers paint their body like tigers as they perform a Tiger dance during the International day of the Tiger in Calcutta, India, July 29, 2015. Students of Calcutta are taking part in an awareness campaign aiming to draw attention to the threats that tigers face due to habitat loss and poaching. (Photo by Piyal Adhikary/EPA)

A young woman drinks beer at Hofbraeuhaus beer tent on the opening day of the 2015 Oktoberfest on September 19, 2015 in Munich, Germany. The 182nd Oktoberfest will be open to the public from September 19 through October 4and will draw millions of visitors from across the globe in the world's largest beer fest. (Photo by Johannes Simon/Getty Images)

The Mexican goalkeeper Carlos Acevedo has a close brush with the ball while making a save against Chile at the Q2 Stadium in Austin, Texas on December 8, 2021. The friendly international match ended in a 2-2 draw. (Photo by Erich Schlegel/USA TODAY Sports)

Dinosaur expert Jason Hyde, 5, gets to know Bruno the T Rex on August 29, 2024. As the summer holidays draw to a close, parents and children enjoy Dinosaur-themed fun in Darlington town centre, UK, including a T-Rex walk and dino trail. (Photo by James Glossop/ The Times & Sunday Times)