A new study focused on cryptic species—animals that look the same but are genetically different—found that they’re more widespread among vertebrates than we previously thought.

Evolution is the process of heritable change in populations of organisms over multiple generations. Evolutionary biology is the study of this process, which can occur through mechanisms including ...

Developmental biology is the field of biology that studies the processes by which multicellular organisms grow and develop, controlled by their genes. Knowledge of normal developmental processes can ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Peter Gratton, Ph.D., is a New Orleans-based editor and professor with over 20 years of experience in investing, economics, and public policy. Peter began covering markets at Multex (Reuters) and has ...

What is quantum physics? Put simply, it’s the physics that explains how everything works: the best description we have of the nature of the particles that make up matter and the forces with which they ...

Cerebral hemispheres The cerebrum's outer layer, it is split into two hemispheres and is highly folded. These two hemispheres make up the cerebral cortex. This controls most of our senses, ...

PNAS publishes peer-reviewed research in biophysics and computational biology, including studies on protein folding, molecular dynamics, structural modeling, complex biological systems, and more. This ...

Delirium is a sudden change in thinking that makes someone confused and disoriented. It is common among older adults in hospitals and is usually temporary. Risk factors for delirium include age, ...

Bacteria are amongst the simplest of organisms – they are made of single cells. Their cell structure is simpler than the cells of animals, plants and fungi.

Don't be afraid to ask for help. Whether you need tutoring, financial guidance or just someone to talk to, we're here for you. Advisors are here to make your life easier by making sure you take the ...

Hypofractionated radiotherapy (HFRT) is increasingly used not only for local tumour control but also for its immunomodulatory potential. By delivering higher doses per fraction over fewer sessions, ...