Season 4

As the search for alternative energy sources continues, scientists are looking to the microcosmos and wondering: Can we use algae oil to power our cars, our airplanes, and maybe even our spaceships?

After over three years of searching for it, our Master of Microscopes has found a Spirostomum semivirescens!

The big Roomba of the microcosmos is fascinating to watch as it lives its sink or swim life.

From trumpets and spirals to floral arrangements, single cell organisms take on many strange and unique shapes. But they don't look like that just for fun, their shapes can help them with movement, hunting, and even defending themselves.

Original Title: Tardigrade Sperm and Other Reproducing Swimmers Not all hypotheses need to be good. In fact, many of them are terrible. It’s just that when you’re trying to understand the world, you might find yourself believing that there are tiny humans living inside the heads of sperm, and we're here to tell you, that's not how it works.

Sometimes we come across microbes that we just can't learn much about, or that don't fit into a larger story. So, this week we're sharing a few of those mysterious microbes with you.

Oil immersion is an interesting and complex microscopy tool.