In the vast and often unseen world of microscopic life, a recent discovery may force scientists to rethink what it means to ...

The being in question is a microbe called Sukunaarchaeum mirabile. Preliminary research says it stretches the definition of ...

The bee hummingbird is the smallest living organism in the world. These birds are easily mistaken for bees because they weigh around 1.6 grams. They are only found in Cuba.

Surveying the body sizes of Earth's living organisms, researchers found that the planet's biomass -- the material that makes up all living organisms -- is concentrated in organisms at either end ...

A bacterium living in special cells inside an insect has the smallest genome of any known cellular lifeform, a new study finds. With only about 160,000 base pairs of DNA, the genome of Carsonella ...

A microbe known as the pleuropneumonia-like organism gives rise to free-living cells smaller than some viruses. They suggest the question: What are the smallest dimensions compatible with life?

Life may come in all shapes and sizes, but nature favours the biggest and smallest creatures over the medium-sized, research suggests.. A survey of body sizes of Earth organisms suggests the ...

IN order to examine the minute organisms that inhabit water, such as rotifers, vorticellæ, and kindred microzoons, the arrangement I proposed some years ago in the Quart. Journ. of Micros. Sci ...

Genetic similarity and common ancestry are key principles behind model organism research. All living things are related, from unicellular bacteria to complex multicellular plants and animals.This ...