Bacteria

Bacteria are everywhere. Only a few micrometers in length and having a wide range of shapes, from spheres to rods to spiral, bacteria are the huddled masses of the microbial world, performing tasks that include everything from causing disease to fixing nitrogen in the soil. Humans need bacteria. In fact, there are approximately ten times […]

The Tree of Life: Part 2

Most of the organisms that scientists know exist fit in the second domain: Bacteria. The bacteria are a large group of unicellular microorganisms. Bacteria are ubiquitous in every habitat on Earth, growing in soil, acidic hot springs, radioactive waste, water, and deep in the Earth’s crust, as well as in organic matter and the live […]