Luiz Inacio Lula da Silva, presidente de Brasil, observa por un microscopio durante la inauguracion del Laboratorio Lacen de Salud Publica, en Sao...
El astronauta Franklin Chang Diaz , la directora del laboratorio de nanotecnologia de la NASA, Jeannette Benavides y el funcionario del Banco...
black, yellow and red wires inside a personal computer - ciencia y tecnología stock pictures, royalty-free photos & images
Queen Sofia of Spain watches wildlife through a telescope during her visit to learn about the Donana Biological Station's research projects at the...