An curved arrow pointing right. CalTech theoretical physicist Sean Carroll stopped by BI to talk about string theory, parallel universes, and other exciting topics he discusses in his new book ...

In the story "Sidewise in Time," a mathematics professor named Minott predicts that patches of parallel universes—worlds where human history unfolded differently—will start to tear through ...

(Thereafter it will disappear into a parallel universe.) This one-hour program is divided into five chapters. Choose any chapter below and select QuickTime or Windows Media Player to begin viewing ...