The eggshell-like material was the result of a rare reaction to a chronic infection.
This past year, new discoveries have revealed an invisible network of immune cells, a "Jell-O" violin in our ears and how the oldest people in this world survived to such extreme ages.
We depend on this organ to live and learn, but much of the tissue still remains as mysterious to us as the inside of a black hole.
Thousands of years ago, a young Neolithic woman in what is now Denmark chewed on a piece of birch pitch.
Dark fluffy thunderclouds don't just fuel dramatic storms, they also produce some of the most energetic flashes of light on the planet.
Predating the bow and arrow, the atlatl was a dart-throwing weapon that could launch projectiles with great force.
A volcano erupted violently on a New Zealand island today local time, sending ash up to 12,000 feet (3,700 meters) into the air, leaving five people dead and many missing.
The delicious scent of baking bread wafting out from the open doors of a nearby bakery can act like a time portal.
A gigantic black hole 15,000 light-years from our planet is twice as massive as what researchers thought was possible in our own galaxy.
The way the artists saw themselves in the mirror was likely a bit different than how others saw them.
The FDA is helping to speed up the process of developing and approving a drug based on psilocybin, a hallucinogenic substance in magic mushrooms, to treat depression.
One of the Goshen Hospital's seven surgical sterilization technicians skipped one step in a multistep cleaning process
That wrinkly and mysterious organ we carry around in our skulls has an almost magical ability to change and adapt.