Biology

Life might have originated in droplets that behave surprisingly like living cells.

Researchers have discovered that simple “chemically active” droplets grow to the size of cells and spontaneously divide, suggesting they might have evolved into the first living cells.

Proteins work like rigid keys to activate cellular functions — or so everyone thought. Scientists are discovering a huge number of proteins that shape-shift to do their work, upending a century-old maxim of biology.

Is the brain a blank slate, or is it wired from birth to understand the world?

The biologist Marcus Feldman creates mathematical models that reveal how cultural traditions can affect the evolution of a species.

Tiny lines laid down by tooth enamel appear to reveal a previously unknown biological rhythm. If confirmed, the finding could help researchers understand why big animals grow slower — and live longer — than small ones.

A virus that causes crippling birth defects has been shown to do something else: It changes thousands of messages coming from DNA that control normal cellular activities.

Bioluminescent organisms have evolved dozens of times over the course of life’s history. Recent studies are narrowing in on the complicated biochemistry needed to illuminate the dark.

Recent discoveries have led some researchers to argue that the modern evolutionary synthesis needs to be amended.