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Chestionar: care credeti ca este varsta medie a populatiei Terrei?
Raspunsul – pe site-ul CIA: The world’s fact book
via regu.la
Hint:
Nearly half of the world’s population (almost 3 billion people) is under the age of 25.
http://www.wpf.org/reproductive_rights_article/facts
Harta lumii: luminile oraselor
Copiii învaţă repede. Nu vă certaţi acasă!
Ziua lui PI: 3/14
Ce poti face de ziua lui π (14 Martie):
1. Prajituri (PIes):
The Next Web: How to celebrate Pi Day: The geekiest time of the year
2. Cercuri in lanuri de grau:
Daily Mail: Easy as pi: Astrophysicist solves riddle of Britain’s most complex crop circle