Episode Ratings Grid

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Episode Power Rankings

The peaks and the valleys. Find the essential episodes — and the ones to skip.

#1
S1E10 9.0
Theme and Variations

The evolution of mammals continues with the focus on some placental species including emphasis on bats, whales and dolphins.

#2
S1E12 8.9
Life in the Trees

Continues the mammal theme, by focusing on primates. Beginning with the lemurs of Madagascar, then describing the differences between old world and new world monkeys and concluding with a study of gorillas and chimpanzees.

#3
S1E3 8.8
The First Forests

Explores the first land living plants and insects, the problems they faced and how they overcame them.

#4 Invasion of the Land S1E6 8.8
#5 The Rise of the Mammals S1E9 8.8
#6 The Hunters and Hunted S1E11 8.8
#7 Victors of the Dry Land S1E7 8.7
#8 Lords of the Air S1E8 8.7
#9 The Infinite Variety S1E1 8.6
#10 The Swarming Hordes S1E4 8.6

Lowlights

#13 S1E2 Building Bodies 8.5

The continuing story of the evolution of life on earth explores the earliest sea living invertebrates.

#12 The Compulsive Communicators S1E13 8.6
#11 The Conquest of the Waters S1E5 8.6
#10 The Swarming Hordes S1E4 8.6
#9 The Infinite Variety S1E1 8.6

The Quality Arc

Each point is an episode, plotted in order. Colored bands mark season boundaries. Look for the rise, the plateau, or the decline.

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Episode Engagement

High votes + high rating = beloved classic. High votes + low rating = notorious stinker. Low votes + high rating = hidden gem.

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