How many genes are there? This question is surprisingly not very important, and has nothing to do with the organism's complexity. There is more to genomes than protein-coding genes alone. As shown in ...

Depending upon how you do the counting, there are around 9 million species on Earth, from the simplest single-celled organisms to humans. It’s reassuring to imagine that complex bodies and brains like ...

Has a complex organism, like a dog, ever evolved into a single-celled organism? originally appeared on Quora: the place to gain and share knowledge, empowering people to learn from others and better ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. The Universe was already two-thirds of its present age by the time the ...

A new study shows that multicelled organisms like the metazoan daphnia (pictured) require a tenfold increase in energy compared with protists for their growth, maintenance and survival. The high cost ...

As creatures made up of trillions of cells, it’s easy for us to look down on single-celled organisms, but new research from Harvard suggests that some of them may be capable of more complex ...