Black-and-white movies might be easy to dismiss as a thing of the past, but some of the most forward-thinking science fiction stories were told through the medium that still hold up today.

so that there can be no doubt as to whether the smoke is white or black – something that had caused confusion in the past.

White smoke from the roof of the Sistine Chapel on March 13th, 2013, indicating the election of Cardinal Jorge Mario Bergoglio as Roman Pontiff with the name of Pope Francis I. CREDIT: Grzegorz ...

Tradition holds that black smoke ... while white smoke signals that a new Pope has been elected. But what kind of smoke is it exactly? Let's take a look at the science. The tradition of cardinals ...

Tradition holds that black smoke ... while white smoke signals that a new Pope has been elected. But what kind of smoke is it exactly? Let’s take a look at the science. The tradition of ...