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The Big Why: Animals Edition

Cracking Secret Codes of the Animal Kingdom

Beyond the limits of human sight and sound lies a hidden world of biological wonders. From the 3D-smelling noses of dogs to the invisible compasses inside a bird's eye, we deconstruct the biological gadgets that make survival possible. Join us on an epic mission to solve the riddles of life on Earth and discover the genius hidden in your own backyard.

Science20 Topics • 42 min

Topics

Super Sniffers: Why do dogs have such sensitive noses?
3 min

Super Sniffers: Why do dogs have such sensitive noses?

Step into a world of smells and discover how a dog's nose can 'see' things that aren't even there.

FREE
The Waggle Dance: Why do bees wiggle?
3 min

The Waggle Dance: Why do bees wiggle?

Learn how honeybees use a special dance to tell their friends exactly where to find the best flowers.

FREE
Ant Trails: Why do they walk in a straight line?
2 min

Ant Trails: Why do they walk in a straight line?

Solve the mystery of how ants find their way home using invisible 'smell maps.'

FREE
Whale Songs: Orchestras of the Abyss
2 min

Whale Songs: Orchestras of the Abyss

Dive into the deep blue to hear the world's loudest living singers and discover the cultural 'hit songs' of the ocean.

FREE
Bird Migration: The Great Celestial Journey
2 min

Bird Migration: The Great Celestial Journey

How a tiny bird with a brain the size of a marble navigates across continents without a single wrong turn.

FREE
Pheromone Perfume: The Moth's Mile-Long Whisper
3 min

Pheromone Perfume: The Moth's Mile-Long Whisper

Step into the invisible world of chemical signals and solve the riddle of how a moth finds its partner in a vast, dark forest.

FREE
The Howl Code: Voices Across the Tundra
3 min

The Howl Code: Voices Across the Tundra

Solve the mystery of the wolf's lonely cry and discover how sound creates an invisible border in the wild.

FREE
Bat Radar: The Architects of Sound
3 min

Bat Radar: The Architects of Sound

Step into a world of pitch-black darkness and discover how bats use 'screams' to build a 3D map of their surroundings.

FREE
The Stomp Message: Earthquakes as Speech
2 min

The Stomp Message: Earthquakes as Speech

Join the world's largest land animals as they send 'seismic' messages through the soil, talking to family members miles away.

FREE
Blinking Codes: The Cold Light of Summer
3 min

Blinking Codes: The Cold Light of Summer

Investigate the silent, glowing conversations happening in your backyard and solve the riddle of the bioluminescent dance.

FREE
Living Mood Rings: The Chameleon’s Crystal Skin
3 min

Living Mood Rings: The Chameleon’s Crystal Skin

Solve the mystery of the lizard that uses its skin as a high-definition billboard for its feelings.

FREE
Prairie Dog Towns: The Most Complex Language?
3 min

Prairie Dog Towns: The Most Complex Language?

Solve the mystery of the tiny 'barks' that can describe exactly what you are wearing.

FREE
The Dawn Chorus: Nature’s Greatest Concert
3 min

The Dawn Chorus: Nature’s Greatest Concert

Solve the riddle of why the forest turns into a wall of sound at the very first light of day.

FREE
Dolphin Clicks: The Name of the Water
2 min

Dolphin Clicks: The Name of the Water

Dive into the ocean and solve the riddle of the only animals (besides humans) that use 'names' for their friends.

FREE
Stink Warfare: The Chemistry of Defense
3 min

Stink Warfare: The Chemistry of Defense

Investigate how a bad smell can be a life-saving 'Stop' sign and solve the riddle of olfactory warfare.

FREE
Octopus Ink: The Underwater Smoke Screen
3 min

Octopus Ink: The Underwater Smoke Screen

Solve the mystery of the underwater magician that disappears in a cloud of darkness using chemical decoys.

FREE
The Silk Telephone: How Spiders 'Hear' with Feet
3 min

The Silk Telephone: How Spiders 'Hear' with Feet

Step onto the web and discover how spiders use vibrations to 'read' the world around them without ever looking up.

FREE
The Mimicry Riddle: Scarecrow Wings
2 min

The Mimicry Riddle: Scarecrow Wings

Discover the high-stakes game of biological dress-up and how butterflies trick their enemies into leaving them alone.

FREE
The Snake Tongue: Tasting the Future
3 min

The Snake Tongue: Tasting the Future

Explore the world of chemical maps and solve the riddle of how snakes 'see' the world through their tongues.

FREE
The Purr Riddle: Biological Healing
3 min

The Purr Riddle: Biological Healing

Investigate the secret healing power and 'happy signal' of a cat's purr and discover how it fixes bones.

FREE