Students from St Andrews University are covered in foam as they take part in the traditional Raisin Weekend in the Lower College Lawn, at St Andrews in Scotland on October 22, 2018. The “raisin weekend” stems from a gift of raisins (now flour and foam) traditionally given by a first year student to their academic “parents” in gratitude for their guidance. (Photo by Russell Cheyne/Reuters)

An immigrant from Mali rests at the Greek-Macedonian border before an attempt to flee to Macedonia May 13, 2015 village of Idomeni in Kilkis prefecture May 13, 2015. Hundreds of mostly Afghan, Syrian, and African immigrants cross daily from Greece into Macedonia on their way to northern European countries; most of them are turned back by Macedonian border guards. (Photo by Yannis Behrakis/Reuters)

A mongoose growls at a startled lion on September 10, 2011 in Maasai Mara, Kenya. Four lions were left with their tails between their legs when a mongoose bravely took on the predators. Despite being under two feet tall, the aggressive mongoose growled at the felines and even bit one on the nose. The shocking fight, which was photographed in 2011 but has just been released, began in the Masaai Mara National Park, Kenya, when photographer Jerome Guillaumot came across four young lions surrounding the terrified marsh mongoose. The lions chased the mongoose into a hole in the ground but the small animal reemerged to fight the predators once again before running for cover. (Photo by Jerome Guillaumot/Barcroft Media)

The NASA Extreme Environment Mission Operations (NEEMO) 21 mission began on July 21 as an international crew of aquanauts splashed down to the undersea Aquarius Reef Base, located 62 feet below the surface of the Atlantic Ocean in the Florida Keys National Marine Sanctuary. The NEEMO 21 crew will perform research both inside and outside the habitat during a 16-day simulated space mission. During simulated spacewalks carried out underwater, they will evaluate tools and mission operation techniques that could be used in future space missions, including journeys to Mars. (Photo by Karl Shreeves/NASA)

Gabriella Papadakis and Guillaume Cizeron of France perform during the ice dance skating event at the ISU Grand Prix of Figure Skating final in Barcelona December 13, 2014. (Photo by Albert Gea/Reuters)

Damai, 3 years old Bornean orang utan plays courtyard at Surabaya Zoo as he prepares to be released into the wild on May 19, 2014 in Surabaya, Indonesia. The two baby orangutans, brothers, were found in Kutai National Park in a critical condition having been abandoned by their mother on May 14, 2014. The Centre for Orangutan Protection (COP) have since been nursing the animals back to health, treating them for malnourishment and 16 wounds predominantly to the feet and hands. (Photo by Robertus Pudyanto/Getty Images)

A model presents a creation by Australian designers Tamara Ralph and Michael Russo as part of their Haute Couture Spring/Summer 2017 fashion show for Ralph & Russo in Paris, France January 23, 2017. (Photo by Gonzalo Fuentes/Reuters)

A member of the Brotherhood of Gentlemen Legionnaires of Asturias feeds its mascot after the governing body of the “Estudiantes” brotherhood decided that penance could not be carried out in the streets due to rain on Palm Sunday in Oviedo, northern Spain, March 20, 2016. (Photo by Eloy Alonso/Reuters)