Amoeba: Secrets of the micro-farm

Amoeba: Secrets of the micro-farm

Found: The smallest farmers in the world! If you’re hungry, and moving to a land without food, the smart money says, “Take some More »

Maggots, leeches, parasitic worms

Maggots, leeches, parasitic worms

Meet three gross “biotherapies”: Leeches suck blood after surgery. Maggots clear dead tissue from wounds. Parasitic worms fight More »

Treatment defeats phony hormones!

Treatment defeats phony hormones!
When chemicals in the water trigger the endocrine system, male fish can start looking and acting female. What happens once chemicals More »

In detail: How learning changes brain

In detail: How learning changes brain
Changes in the junctions between nerve cells determine how well a bird will learn to sing. Regular change in these junctions helps the More »

Sustaining symbiosis – new clues

Sustaining symbiosis - new clues

To hide from hungry fish, this animal houses luminous bacteria. But what prevents the bacteria from reproducing and killing the squid? More »

Testing touch

Testing touch
Why do women have better sense of touch? It’s all in the size, and big isn’t better… More »

Imitation: Better than flattery?

Imitation: Better than flattery?

Imitation is a social glue in human society. We like people who imitate us. We call them friend. We will even tip them better! A new More »

Animal arms race

Animal arms race

The struggle between predator and prey never ends. Bats invented sonar, and now some moths are fighting back. Check out the Why Files More »

How a fly detects a poison

How a fly detects a poison

Animals spend a lot of energy avoiding toxic chemicals in their food. A new type of gene that does this in fruit flies reinforces the More »

Micro eye movements

Micro eye movements

You can’t hold your eyes completely still, but what is the purpose of those tiny movements? A new study could explain why we make them More »

Song of the crocodile

Song of the crocodile

How does momma croc know when to dig up the young? How do the embryos know when to start hatching? The secret’s in the song… More »