Ep 13. Little Creatures Who Run the World

The NOVA season 22 episode 13, titled Little Creatures Who Run the World, takes viewers on a journey to discover the amazing world of microorganisms. These tiny creatures, such as bacteria, fungi, and viruses, are all around us, yet they are largely invisible to the naked eye. Nevertheless, they play an enormous role in shaping our planet and our lives.

The episode begins by exploring the amazing diversity of microorganisms. With stunning images captured by microscopes, viewers can see the intricate and complex structures of bacteria, the intricate and branching networks of fungi, and the weird and wonderful shapes of viruses. Each is unique, and each has its own role to play in the ecosystem.

From there, the episode delves into the ways in which microorganisms interact with the world around them. For example, we learn how bacteria make soil fertile by breaking down dead organic matter and turning it into nutrients that plants can use. We also explore the deep sea, where bacteria live in extreme conditions and play a crucial role in recycling nutrients and keeping the ocean healthy.

The episode also looks at the ways in which microorganisms can be harnessed for human benefit. For example, we learn about how bacteria can be used to clean up oil spills, and how fungi can be used to create new antibiotics. We also explore the fascinating world of probiotics, and how they are being used to treat a wide range of health conditions, from allergies to obesity.

Along the way, the episode introduces viewers to a cast of characters who are passionate about microorganisms. We meet microbiologists who study the intricate workings of individual cells, and ecologists who investigate the role of microorganisms in entire ecosystems. We also meet doctors who are using a new generation of genetic tools to understand the interplay between microorganisms and human health.

Ultimately, the episode argues that microorganisms are much more important and complex than most people realize. They are not just small and simple creatures, but rather intricate and fascinating organisms that play a critical role in shaping our planet and our lives. By the end of the episode, viewers will have a newfound appreciation for these "little creatures who run the world," and an understanding of the ways in which we are all connected to the microbial world.