When Whales Walked: Journeys in Deep Time

Empire of Elephants

Clip | 4m 46s

Today there are only three species of elephant, but 16 million years ago there were dozens. What happened to all those species? Over many millions of years, due to climate change and predation pressure from humans, elephants waned until today, where there are only three species left.

Aired: 06/11/19

Rating: TV-PG

Video has closed captioning.

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