On Demand

Quantum Physics

Do you want to describe the microscopic world of atoms and nuclei? Well, classical physics isn't going to cut it. You'll need quantum physics to explain things like atomic energy...

Khan Academy

On Demand

Thermodynamics

Thermodynamics is the study of heat, "thermo," and work, "dynamics." We will be learning about energy transfer during chemical and physical changes, and how we can predict what...

Khan Academy

On Demand

Plant biology

Plants may seem less interactive than animals. But they actually have many ways of responding to their environment, changing their growth or physiology to make the best use of...

Khan Academy

On Demand

Cells

You, my friend, are made up of cells. Lots and lots of them. Jump in to learn more about prokaryotic and eukaryotic cells and the complex and beautiful structures inside them.This...

Khan Academy

On Demand

Ecology

Why are polar bears found only in the Arctic? Why does mildew grow in your shower and not (hopefully) in your sock drawer? Learn how ecologists study the interactions between...

Khan Academy

On Demand

Circulatory system diseases

With the heart pumping 24/7, it’s crucial that things flow smoothly (pun intended!). Unfortunately, this isn’t always the case. The underlying reasons for circulatory system...

Khan Academy

On Demand

Respiratory system diseases

If any part of the respiratory system isn’t working properly, a person can be left feeling short of breath. The lungs are also exposed to the outside environment, making them...

Khan Academy

On Demand

Hematologic system diseases

Blood acts as a highway for medicine, stops bleeding, fights infections, and much more. But things can go wrong with blood too! The many types of cells in blood means that blood...

Khan Academy

On Demand

Endocrine system diseases

The most common endocrine system disease is Diabetes Mellitus. There are two types of diabetes that arise from distinct biological contexts. Both result in an inability to produce...

Khan Academy

On Demand

Nervous system diseases

Being human is more than being a brain in a jar, but when things go wrong with the nervous system, the whole organism suffers. Problems with a part of your nervous system can...

Khan Academy