A UCLA student is arrested by Los Angeles Police Department officers after she attempted to escape after eleven student protesters sat in circle in middle of the Westwood and Wilshire boulevard intersection as part of a protest of bank practices and rising fees at public universities on November 9, 2011 in Los Angeles, California. The protest organized by ReFund California was one of several planned at universities around the state. (Photo by Kevork Djansezian/Getty Images)

Model Bianca Gavrilas wears a a hand-embroidered cape made from the silk of the Golden Orb Spider in the V&A Museum's Medieval and Renaissance Gallery on January 23, 2012 in London, England. The cape is one of two golden spider silk textiles that exist in the world, it was made in Madagascar over a period of 8 years and using the silk of silk of 1.2million spiders. (Photo by Oli Scarff/Getty Images)

“The finless porpoise (Neophocaena phocaenoides) is one of six porpoise species. In the waters around Japan, at the northern end of its range, it is known as the sunameri. A freshwater population found in the Yangtze River in China is known locally as the jiangzhu or «river pig»”. – Wikipedia

Photo: A newly born Yangtze finless porpoise (top) swims with his mother at the Hydrobiology Institute of the Chinese Academy of Sciences on June 3, 2007 in Wuhan of Hubei Province, China. (Photo by China Photos/Getty Images)

Shimmering clearest blue and stretching as far as the eye can see, this is one of Iceland's famed crystal ice caves. The giant solid waves look frozen in time but they are slowly moving along as part of the Vatnajokull Glacier – which stretches across eight per cent of the island. The images were captured in February 2014 by British photographer Rob Lott, 49. Photo: A wide view of Rob Lott in the crystal ice cave in the Vatnajokull Glacier, Iceland. (Photo by Rob Lott/Barcroft Media)

The ‘Stop the Violence’ advertising campaign by Brazilian agency Terremoto Propaganda aims to reduce the risk of accidents on the road. The visually grabbing print campaign shows a vehicle painted on the face of one person and the fist of another, drawing the comparison between what is widely known to be intentional violence, such as punching someone in the face, with what many incorrectly consider unintentional, like speeding or unsafe lane changes. Let us know what you think about this campaign in the comments below.

Macro or Micro? Scientists’ pictures baffle our sense of scale. It began when Stephen Young, a geography professor at Salem State University in Massachusetts, tricked his biologist colleague Paul Kelly into thinking a satellite image was one of his electron microscope scans. Can you guess whether they are close-up or very far away? (Photo by Paul Kelly)