Ammonite fossils, an example is shown here, are sea creatures that became extinct about 65 million years ago. Fossil remains have been found in rocks of all ages. Fossils of the simplest organisms ...

Now, in a study published today (July 28) in Nature, Elizabeth Turner, a geologist at Laurentian University in Canada, identified structures in 890-million-year-old fossils of organisms similar to ...

A solar cell is made of two types of semiconductors, called p-type and n-type silicon. The p-type silicon is produced by adding atoms—such as boron or gallium—that have one less electron in their ...

Indeed, researchers are coming to realize that the term “living fossil” is a misnomer. One by one, the classic examples—horseshoe crabs, coelacanths, cycads, and more—have turned out to be very ...

They are still common structures today. The fossils within consist of a series of cell-sized, presumed prokaryotic fossils. The paleontological community widely accepts these fossils as the ...

Mitosis is a process of nuclear division in eukaryotic cells that occurs when a parent cell divides to produce two identical daughter cells. During cell division, mitosis refers specifically to ...

Fossils are the preserved remains or traces of a dead organism. They provide evidence for how living things and the environment have changed over time. Fossils have been found in rocks of all ages ...

Some of the tissue remains were so flawlessly fossilized that researchers could see skin cell nuclei under the ... to infer such a behavior from fossils. “I don’t see this animal spending ...