Vuelta por el universo

Maasai warriors cover a battle field as they clash with bows and arrows with members of the Kalenjin tribe in the Kapune hill overlooking the Olmelil valley located in the Transmara District in Western Kenya on March 01, 2008. The Massai, the Kalenjin and the Kisii tribes have recently clashed over ongoing land disputes that erupted after botched local elections during the general elections held in Kenya in December of 2007. Over twenty warriors from the tribes have been killed in bow and arrow battles near the borders of these tribes in the last couple of months. (Yasuyoshi Chiba/AFP/Getty Images)

Time exposure of the Swiss mountain resort of Grindelwald next to the north face of the Eiger mountain, seen on January 10, 2008. (REUTERS/Stefan Wermuth)

Mas en http://www.boston.com/bigpicture/2008/12/the_year_2008_in_photographs_p.html