Part two begins right where part one left off: discussing the potential for infections from microbes. Treatment of diseases is covered as well as the steps taken to prevent infection. New bacteria and viruses continue to develop, but not...

This video segment adapted from NOVA describes a simple experiment that confirmed the idea that microbes can accelerate the biogeochemical process of cave formation. [4:12]

This video segment adapted from NOVA raises the provocative idea that if life can exist in the most extreme environments on Earth, such as in dark, toxic caves, then perhaps living things can also survive in harsh environments on other...

In this video from Evolution, an exploration of multi-drug resistant tuberculosis in the Russian prison system highlights one reason it is important to understand evolution.

Discover how scientists are beginning to predict patterns of disease transmission and levels of virulence. Explore how society can steer the evolution of microorganisms to weaken them.

Explore how antibiotics help some sick people. Discover what happens when patients cut short their full course of antibiotic drugs.

In Bruce Logan's lab at Penn State University, researchers are working on developing microbial fuel cells (MFCs) that can generate electricity while treating wastewater. They are also researching methods to increase power generation from...

This video provides a brief explanation of the microbes that live in the foods we love. [3:19]

It's all about the SUPER TINY in this episode of Crash Course: History of Science. In it, Hank Green talks about germ theory, John Snow (the other one), pasteurization, and why following our senses isn't always the worst idea. [12:11]

Determine whether childhood exposure to livestock provides the challenges necessary for the young immune system to grow strong enough to later fight off asthma and allergies. Discover how the modern trend toward "supercleanliness" can...

Biologist Rob Dunn explains how the organisms that share our world have shaped us. [17 mins. 39]

This lesson explains the existence and importance viruses. It is 2 of 4 in the series titled "Microbes: Viruses."

Sinuses, too, are healthier when populated by a diverse colony of bugs.

Shannon Bennett studies infectious diseases that can be transmitted from animals to humans. While invisible to the naked eye, these microbes have a major impact on global human health, which is why the race is on to understand how they...