Brown, Mike

Presents the physical characteristics and behavior of this meat-eating hunter and fighter.

Describes the physical characteristics and behavior of these giant carnivores.

Describes the physical characteristics and behavior of this heavily armored dinosaur.

The astronomer who inadvertently triggered the "demotion" of Pluto in his effort to officially recognize the solar system's tenth planet describes the ensuing debates and public outcry while revealing the behind-the-scenes story of his discovery.

Describes the physical characteristics and behavior of this speedy ostrich-like dinosaur.

Describes the physical characteristics and behavior of this two-legged predator.

Describes the physical characteristics and behavior of this flesh eating dinosaur.

Astronomer Mike Brown describes how his search for a tenth planet, Eris, a planet more massive than Pluto, led to the demotion of Pluto to a dwarf planet.