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In this Click & Learn, students explore factors that contribute to patterns seen in the Keeling Curve: a continuous record of atmospheric CO₂ starting in 1958.

This interactive module consists of a virtual Winogradsky column, which can be used to explore the diversity of microbes, microbial metabolic strategies, and geochemical gradients found in sediments.

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 tutorial describes the symbiosis between the Hawaiian bobtail squid and bioluminescent bacteria.

This tutorial describes how bacteria communicate by a process known as quorum sensing, as shown through a series of experiments involving genetically engineered bioluminescent bacteria.

This tutorial describes how animals differ in their abilities to heal wounds and regenerate lost body parts or damaged tissues.

This tutorial explores how stem cells can be used to treat a wide range of diseases.

This interactive, modular lab explores the techniques used to identify different types of bacteria based on their DNA sequences.

This interactive, modular lab explores the tools that doctors use to examine and diagnose patients with heart conditions.