Você precisa estar logado para marcar um episódio como visto. Entrar ou registar.
Temporada 1
Human beings have interacted with elements since prehistoric times. Yet large-scale efforts to organize these elements did not come about until the 19th century. In this lesson, become
.. show full overview
Human beings have interacted with elements since prehistoric times. Yet large-scale efforts to organize these elements did not come about until the 19th century. In this lesson, become acquainted with the periodic table. Learn about its basic organizing principles and allow Ron to take you on a quick tour of its evolution through time.
Se faltam episódios ou banners (e eles existem no TheTVDB) você pode solicitar uma atualização automática :
Solicite uma atualização
Atualização solicitada
