How sister chromatids separate to form gametes. Prophase II, metaphase II, anaphase II, telophase II.
Understanding how the same genotype can still result in variation of phenotype based on environment.
How did Philip of Macedon unify Greece? Sal discusses his rise to power, the League of Corinth, and the rise of Alexander the Great.
In 1958, economist Bill Phillips described an apparent inverse relationship between unemployment and inflation. Later economists researching this idea dubbed this relationship the "Phillips Curve". Learn about the curve that launched a thousand macroeconomic debates in this video. Created by Sal Khan.
Introduction to the Greek philosophers Socrates, Plato and Aristotle.
Overview of photosynthesis. What photosynthesis accomplishes, why it's important, and how the light-dependent and light-independent reactions work together. Photosynthesis is usually represented by the equation 6 CO2 + 6 H2O + light --> C6H12O6 + 6 O2. During this process, organisms such as plants go through the light-dependent and light-independent reactions to convert carbon dioxide and water into sugars and oxygen. Created by Sal Khan.
How and where photosynthesis evolved in the ancestors of cyanobacteria (along with a discussion of endosymbiosis).
Piketty's two drivers of divergence. A discussion with Sal Khan.
Understanding the structure of plant cell walls.
Plates Moving Due to Convection in Mantle. Created by Sal Khan.
Plate Tectonics Introduction and Difference between crust and lithosphere. Created by Sal Khan.
Plate Tectonics -- Evidence of plate movement. Created by Sal Khan.
Geological features of Convergent Plate Boundaries. Created by Sal Khan.
Plate Tectonics -- Geological Features of Divergent Plate Boundaries. Created by Sal Khan.
Plotting projectile displacement, acceleration, and velocity as a function of time. Created by Sal Khan.
How liberals, conservatives, and libertarians think about fiscal and monetary policy. Discussion of Keynesian and supply-side economics.
Factors that influence an individual's political attitudes and values.
Introduction to PCR (polymerase chain reaction).
Ponzi Schemes. Created by Sal Khan.
The higher the genetic diversity in a population, the more resilient the population is to environmental change. Created by Sal Khan.