"Once damaged, these hairs never grow back. You have around 3,500, and that is all you'll have throughout your entire life...

Plenty of useful facts are taught in biology classes − from the nutrients necessary for the human body to the mechanisms that ...

The average adult male has around 36 trillion cells in their body, while average adult females have 28 trillion, researchers have found. Unexpectedly, the mass of small cells in our bodies, such as ...

Even the most elite endurance athletes can’t outrun biology. A new study finds that humans hit a metabolic ceiling at about 2.5 times their resting energy burn. When ultra-runners take on races that ...