An organ is a group of tissues that work together to perform a specific task in the body, such as digesting nutrients or producing chemical messengers that enable brain cells to communicate. Although ...

A computer-generated image of red blood cells. Nitric oxide—known by the formula NO—is so vital for humans’ internal physiological processes that it was crowned Molecule of the Year in 1992. It plays ...

Researchers have uncovered and then overcome an obstacle that has led to the failure of pioneering efforts in ...

Scientists published more than three dozen papers as part of the Human Cell Atlas, an effort to map the human body cell by cell. When you purchase through links on our site, we may earn an affiliate ...

RICHMOND, Va. — What makes you happy? Is it the rich taste of chocolate, the serenity of a long walk on the beach or the rush of skateboarding? No matter what brings you joy, the impact of happiness ...

In many cells of the human body, hair-like protrusions known as cilia act as antennae, allowing cells to receive signals from their environment and other cells. As cells grow and divide, each cilium ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...

Studying elite athletes in real-world endurance events offers a rare glimpse into the limits of human performance. In cycling, few challenges test the body and mind like the Tour Divide — a ...

July 2023 was the hottest month ever recorded. It could even be the hottest month in human history. That heat has tested the limits of our very bodies to tragic effect: In 2003, an estimated 70,000 ...