The soleus muscle, though only 1% of your body weight, can do big things to improve the metabolic health in the rest of your body.

Researchers have developed a gel-based cartilage substitute to relieve achy knees that’s even stronger and more durable than the real thing.

If evolutionary biologists were to rank the body parts that make us quintessentially human, the pelvis would place close to the top.

The millipede has 1,306 legs — more than any other animal — and belongs to a new species that has been named Eumillipes persephone.