Austrian alpine skiers (LtoR) Georg Streitberger, Klaus Kroell, Max Franz, Joachim Puchner, Romed Baumann pose in the Olympic Rings on February 4, 2014 at the Mountain Olympic Village at the Rosa Khutor Alpine centre, four days prior to the start of the 2014 Sochi Winter Olympic Games. (Photo by Fabrice Coffrini/AFP Photo)

1st prize in the People Observed Portraits Stories category. Carla Kogelman, the Netherlands. The photo shows Hannah and Alena, two sisters living in the rural village of Merkenbrechts, Austria. (Photo by Carla Kogelman/World Press Photo)

Surfer Hannah Cornett attends The 2014 ESPYS at Nokia Theatre L.A. Live on July 16, 2014 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)

Crowds Gather For New Year's Ball Drop In Times Square on December 31, 2011 in New York City. (Photo by Michael Loccisano/Getty Images)

Fireworks explode over Elizabeth Tower housing the Big Ben clock in London. (Photo by Kirsty Wigglesworth/Associated Press)

The lightest material ever made has been produced by a team of scientists in China, a Chinese university announced.

Javanese people pray before rituals night carnival “1st Suro” (Javanese calender) during Islamic New Year celebrations at Kasunanan Palace on November 14, 2012 in Solo City, Central Java, Indonesia. Javanese will celebrate the national holiday with ceremonies and rituals marking the 1434th Islamic New Year's Eve or “1st Suro”. The parade started from Keraton Kasunanan and is headed by a group of albino buffaloes, known as Kebo Bule. Local people believe that the parade of Heirlooms and Kebo Bule will bring them a better life. (Photo by Ulet Ifansasti)