A Somali police officer arrests a suspected rebel member of the al Qaeda-affiliated al Shabaab among beach goers in Mogadishu. Al Shabaab claimed responsibility for today's pre-dawn attack on a Kenyan university campus near the Somali border. The following gallery examines who is al Shabaab. Here: Somali police officer (R) arrests a suspected rebel member (L) of the Al Qaeda-affiliated al Shabaab among beach goers at the Lido beach north of Somalia's capital Mogadishu March 23, 2012. (Photo by Feisal Omar/Reuters)

Badminton School sixth form pupils (L-R) Lucy Warden, who got 3 A* and is off to study English at Durham, Sam Crumpton, who got 1 A* and 2 A's and is off to study to be a vet at Cambridge and Madeline Sunter, who got 2 A* and 1 B, and is off to study fashion at St. Martins, celebrate their A-level results on August 18, 2011 in Bristol, England. With another record year for A-level results, sixth-form students face a scramble for university places in the final year before tuition fees rise. According to the examination bodies the pass rate rose for the 29th successive year to hit 97.8 percent, while around one in 12 exams achieved the top A* grade. (Photo by Matt Cardy/Getty Images)

Crew in Britain's first ever full-size reconstructed sea-going Bronze Age boat, paddle out to sea near to the National Maritime Museum as it makes its maiden voyage on March 6, 2013 in Falmouth, England. (Photo by Matt Cardy)

'Military woman' is a constantly updated gallery of images of women wearing uniform: military, police and so on. We truly hope that our beloved visitors won't remain passive and will take part in this project making it even more interesting! Note that all the images featured in the gallery are taken from publically available sources: their copyright belongs to their respective creators and the trade mark to the owners. ...

MS Tûranor PlanetSolar, known under the project name PlanetSolar, is the largest solar-powered boat in the world The vessel was designed by LOMOcean Design, built by Knierim Yachtbau in Kiel, Germany, and launched on 31 March 2010. In May 2012, it became the first ever solar electric vehicle to circumnavigate the globe. The 31-meter boat is covered in over 500 square meters of solar panels rated 93 kW, which in turn connect to one of the two electric motors in each hull. There are 8.5 tons of lithium-ion batteries in the ship's two hulls. The boat's shape allows it to reach speeds of up to 14 knots. The hull was model tested in wind tunnels and was tank tested to determine its hydrodynamics and aerodynamics. The boat has been designed to be used as a luxury yacht after the record attempt is finished.

“One Third” – a project on food waste by an Austrian photography Klaus Pichler. According to a UN study one third of the world's food goes to waste – the largest part thereof in the industrialized nations of the global north. Equally, 925 million people around the world are threatened by starvation. The series “One Third” describes the connection between individual wastage of food and globalized food production.

Photo: Pineapple. Place of production: Guayaquil, Ecuador. Cultivation method: Outdoor plantation • Time of harvest: All- season. Transporting distance: 10.666 km (linear distance) • Means of transportation: Aircraft, truck. Carbon footprint (total) per kg: 11,94 kg • Water requirement (total) per kg: 360 l. Price: 2,10 € / kg. (Photo by Klaus Picher)

“The Sumatran tiger (Panthera tigris sumatrae) is a rare tiger subspecies that inhabits the Indonesian island of Sumatra. It was classified as critically endangered by IUCN in 2008 as the population is projected to be 441 to 679 individuals, with no subpopulation having an effective population size larger than 50 individuals, with a declining trend”. – Wikipedia

This photo taken on July 25, 2012 one of 14 preserved bodies of critically-endangered Sumatran tigers seized as members of the Indonesian national police and the special crime unit inspect the scene at a warehouse in Cibubur, south of Jakarta. Indonesian police seized 14 preserved bodies of critically-endangered Sumatran tigers in a raid on a house near Jakarta, a spokesman said on July 19. (Photo by Bay Ismoyo/AFP Photo)

Two De Brazza's monkeys stand together at Port Lympne Wild Animal Park on June 21, 2011 in Hythe, England. Port Lympne has welcomed a host of new arrivals this year with wildebeest, colobus monkeys, gorillas and rhinos all adding to the current stock. Port Lympne and Howletts Wild Animal parks were set up by the late John Aspinall to protect and breed rare and endangered species and, where possible, return them to safe areas in the wild. The Aspinall Foundation which runs the parks also manages two gorilla rescue and rehabilitation projects in the central African countries of Gabon and Congo where they have successfully reintroduced over 50 gorillas to the wild. (Photo by Dan Kitwood/Getty Images)