Cyanobacteria or blue-green algae are undoubtedly the most important microorganisms that have ever appeared on Earth. Here you can read more about these fascinating microorganisms.

It is not that often that I look at blood under the microscope. It usually happens when I get injured and have the opportunity to get a microscope. After an unfortunate shave, I act quickly so that I can prepare a slide from the blood before it dries up.

The wide variety of colors in flowers and fruits is largely caused by pigment containing organelles called chromoplasts. Chromoplasts belong to the plastids and they are responsible for the bright red, orange and yellow colors in many fruits and flowers.