Medically reviewed by Michael Menna, DO Key Takeaways The circulatory system carries oxygen and nutrients throughout the body and removes waste.The lymphatic system helps fight disease by creating and ...

Many aspects of our world, from the body mass of creatures in the animal kingdom to the population of cities across the globe, follow an intriguing mathematical pattern. Known as Zipf's law, the rule ...

One of the biggest mistakes you can make in life is believing that you know everything there is to know. Even if you’re highly educated and brag about how brainy you are, there’s ...

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 ...

Air pollution, like ozone and PM2.5, significantly damages nearly every major human body system, impacting cardiovascular, ...