After more than two decades of analysis, researchers from Montana State University have finally revealed how three microbes ...

Fossils can tell scientists what living things were around at different times in Earth’s history. Evidence of early plants can tell scientists how oxygen started to be added to the atmosphere ...

Most living things depend on photosynthetic cells to ... cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex ...

In living things, diffusion allows substances to move in and out of cells. It's how red blood cells distribute oxygen through the body. When empty blood cells enter the lungs, which have an ...