Extras

Video thumbnail: Your Inner Fish Your Aching Back: A Gift from Your Ancient Ancestors

Your Inner Fish

Your Aching Back: A Gift from Your Ancient Ancestors

As Bruce Latimer explains, our evolutionary history has some consequences for our back.

Your Aching Back: A Gift from Your Ancient Ancestors

Video thumbnail: Your Inner Fish Episode 3: Your Inner Monkey Preview

Your Inner Fish

Episode 3: Your Inner Monkey Preview

Find out which traits our primate progenitors bequeathed to us.

Episode 3: Your Inner Monkey Preview

Video thumbnail: Your Inner Fish The 500-Million-Year History of the Human Brain

Your Inner Fish

The 500-Million-Year History of the Human Brain

Biologist Peter Holland shows us how much we have in common with a wormy little animal.

The 500-Million-Year History of the Human Brain

Video thumbnail: Your Inner Fish Amazing Places, Amazing Fossils: Lucy

Your Inner Fish

Amazing Places, Amazing Fossils: Lucy

Don Johanson recounts the discovery of an iconic human ancestor in Ethiopia.

Amazing Places, Amazing Fossils: Lucy

Video thumbnail: Your Inner Fish Ancient Human Ancestors: Walking in the Woods

Your Inner Fish

Ancient Human Ancestors: Walking in the Woods

"Ardi" changed our understanding of how our ancestors first started walking on two legs.

Ancient Human Ancestors: Walking in the Woods

Video thumbnail: Your Inner Fish How Do We Know When Our Ancestors Lost Their Tails?

Your Inner Fish

How Do We Know When Our Ancestors Lost Their Tails?

Paleontologist Holly Dunsworth shows us fossil evidence for the disappearance of our tail.

How Do We Know When Our Ancestors Lost Their Tails?

Video thumbnail: Your Inner Fish The Human Hand: A Gift from Ancient Primates

Your Inner Fish

The Human Hand: A Gift from Ancient Primates

Meet an ancient primate with a hand eerily similar to your own.

The Human Hand: A Gift from Ancient Primates

Video thumbnail: Your Inner Fish Meet Your Cousins: Squirrel Monkeys

Your Inner Fish

Meet Your Cousins: Squirrel Monkeys

Our relationship to living primates can be seen in their anatomy and genes.

Meet Your Cousins: Squirrel Monkeys