Critical and historical notes accompany Shakespeare's comic play about the separation an eventual reuniting of twin brothers.

Describes how electrical energy is generated in power stations and how it travels through pylons, power cables, and wires into people's homes.

Follows a drop of water as it cycles from droplet to vapor and back to water and describes its journeys in between.

Follows the sun from dawn to dusk to explain how light rays travel, how shadows are formed, how the moon lights up the night sky, and more.

Octavius Caesar, Marc Antony, and Lepidus form the triumvirate, the three rulers of the Roman Empire. Antony, though married to Fulvia, spends his time in Egypt, living a life of decadence and conducting an affair with Queen Cleopatra. In Antony's absence, Caesar and Lepidus worry about Pompey's increasing strength. Caesar condemns Antony for neglecting his duties as a statesman and military officer. Hearing that his wife, Fulvia, has died and that...