Leif Saul hangs out with a neuron

A bottle model to explain lung ventilation and pneumothorax
To understand how your lungs work, you need to understand how they function within the context of ...
How muscles work
Here’s how we move, using the elbow as an example.  A muscle is attached to the bones on either ...
The zebra spider around your home
The zebra spider, Salticus scenicus, is more common and fascinating than many people realize.  ...
The private life of earthworms
Every summer I am shocked, simply shocked by the wanton hedonism that transpires in my tomato ...