Evolution

Over the past two billion years, life on Earth has evolved from simple single-celled organisms to complex life forms in which billions of cells coordinate their activities.

Dogs have been companions to humans for at least 17,000 years. During this time, they’ve evolved significantly. They're still evolving.

These are the oldest microbes ever discovered.

Blue is considered a primary color, a rarer one than we might think.

What will happen if we succeed and start inhabiting the rest of the solar system’s planets in the long term?

The latest findings suggest that between 1% to 4% of our genetic material is inherited from Neanderthals.

While researchers previously thought that human cavities were caused by a change in diet, a new paper suggests another culprit: bacteria.