The digestive system does more than break down food — here's how it fights pathogens and why it’s so important for survival.

Inflammation is a natural biological process, and we need some of it to keep us safe — here’s why inflammation is necessary for survival.

The bubonic plague isn't a disease of the past — it still exists today, and here's why.

The common cold is the most common human disease in the world — here's why we haven't found a cure yet.

Sinus infections are incredibly common — here's why humans are so prone to getting them.

A team at Carnegie Mellon University has just developed the first flexible, full-size, 3D-print of a human heart.

The COVID-19 vaccines have arrived — here's what we know about the distribution plan.

SARS-CoV-2, the virus responsible for the COVID-19 pandemic, is mutating — here's what that means for us.

Here's why babies spit up and why they eventually stop.

New studies have uncovered that the average human body temperature is actually lower than 98.6 degrees Fahrenheit.

Here's how doctors test what babies can see.

Skin-to-skin care is critical for babies, but the benefits go both ways.