This activity analyzes a figure showing the atmospheric carbon dioxide concentration from 1958 to 2016.

This activity guides students through building a conceptual model of how carbon dioxide affects Earth’s climate.

This interactive module examines Earth’s past and present climate, highlighting the effects of two important factors: solar radiation and the composition of the atmosphere.

This interactive module explores how the changes in oxygen levels throughout Earth’s history have impacted the planet’s environment and types of life.

This animation provides an overview of the greenhouse effect, a process that warms the atmosphere and surface of Earth.

This animation explores how carbon enters the atmosphere and can be removed through a series of chemical reactions.