Ciencia con Jorge Alcalde – 04/02/10
[youtube https://www.youtube.com/watch?v=Fw7PTrttQtc&color1=0xb1b1b1&color2=0xcfcfcf&hl=es_ES&feature=player_embedded&fs=1]
[youtube https://www.youtube.com/watch?v=Fw7PTrttQtc&color1=0xb1b1b1&color2=0xcfcfcf&hl=es_ES&feature=player_embedded&fs=1]