What actually happens to the human body when you stop eating for an entire week? In this challenge I attempted to go seven ...

Lower gravity. Higher radiation. No ER access. These are just a few of the challenges that humans face in outer space. Emily and Regina talk to a NASA astronaut (and astronaut scientist) about the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Each human is a ...

Rachel Feltman: For Scientific American’s Science Quickly, I’m Rachel Feltman. Humans have been trying to replace ailing parts of our bodies for thousands of years, turning to prosthetic limbs, ...

Add Yahoo as a preferred source to see more of our stories on Google. “Those who continue to challenge their bodies in consistent ways will maintain sharper balance and motion as they age,” Hanks says ...

Young women with breast cancer often experience declines in body image and sexual satisfaction during and after treatment, necessitating comprehensive support systems. Chemotherapy and surgery can ...

Your birthday can’t tell you this—but your body can. As we age, our bodies conduct every action a bit slower: our daily walks become shorter, our endurance goes down, and our brains aren’t as sharp as ...

As we age, our bodies conduct every action a bit slower: our daily walks become shorter, our endurance goes down, and our brains aren’t as sharp as they once were. It’s a shared experience among most ...