Bacteria World

Microbes, microscopes, ecosystems, food, health, and the tiny living world all around us.

About Bacteria World

Bacteria are everywhere, from ocean water and soil to fermented foods and the human body. Bacteria World explores what bacterial cells are, how scientists see them, how microbes shape ecosystems, why many bacteria are helpful, how a small number cause disease, and how this invisible world affects life on Earth.

Scanning electron micrograph of Escherichia coli bacteria — Escherichia coliA high-magnification electron micrograph reveals rod-shaped bacterial cells.

Scanning electron micrograph of Lactobacillus acidophilus — LactobacillusSome bacteria are familiar partners in fermented foods and microbial communities.

Cyanobacteria under a light microscope — CyanobacteriaPhotosynthetic bacteria helped transform Earth's atmosphere.

What Are Bacteria?

Cells, shapes, DNA, reproduction, size, movement, and metabolism.

Helpful Bacteria

Digestion, fermentation, plants, soil, biotechnology, and nutrient cycles.

Harmful Bacteria

Pathogens, immune defenses, antibiotics, resistance, and public health.

Microbes

Compare bacteria, archaea, fungi, protists, and viruses.

Microscopes

Light microscopy, stains, electron microscopes, resolution, and imaging.

Bacteria in Nature

Soils, oceans, decomposition, cyanobacteria, nitrogen, and biofilms.

Bacteria in Food

Yogurt, cheese, fermented vegetables, food science, and safety.

Human Microbiome

Gut, skin, mouth, immune interactions, diversity, and microbiome research.

Hygiene & Prevention

Handwashing, safe water, food hygiene, cleaning, and prevention.

Bacteria Facts

Ancient microbes, oxygen, genes, biofilms, food, medicine, and surprising facts.

Games

Play and learn with bacteria-themed educational games.

Coming Soon