Rothaus, Don

Looks at the different types of hyenas, examining their habits and environment.

Looks at the different types of moray eels, examining their habits and environment.

Looks at warthogs, examining their habits and environment.

Describes canyons and how they are formed, highlighting the unique features of the world's deepest canyons, the Valles Marineris canyons on Mars, and the submarine valleys found on the ocean floor.

Describes various characteristics of the world's oceans, including their origins, the composition of seawater, currents, and the effect of the moon on tides.