Yesterday, January 15th Wikipedia, Internet's free encyclopedia, celebrated their 15th birthday. It's been working since January 15th 2011. Jimmy Wales and Larry Sanger created it.
It was born as a webpage in English, but nowadays it has articles written in 287 languages. 28 of them have more than 300.000 articles each. Only in Spanish there are more than one million articles. Totally there are more than 38 million pages about every topic you can imagine inside it. Only between 2005 and 2015 the number of articles were multiplied by 10, as there are more than 700 new pages created every day. Each month the web receives 500 million visits.
Last year Princess of Asturias International Cooperation Prize was awarded to it for making universal knowledge accesible to everybody.
Galician version of this post @ ArquivosDoTrasno.