Residents walk and receive information inside a "Giant Heart", as part of the commemoration of World Heart Day, at San Martin Square, in Buenos Aires, Argentina, on Sept. 29, 2014. The Federation World Heart celebrated every Sept. 29 the World Heart Day in over a hundred countries in order to promote preventive measures and awareness for the importance of the fight against cardiovascular disease, according to local press. (Xinhua/Martin Zabala)