Why do we have blood and what does it do?

How are video games made? Who invented the concept? Why do games have levels? Who invented them? Why are game consoles so expensive? Why do people like playing these games so much and do they turn your brain to mush? What do you do if you can’t make yourself stop playing? In this ...  Show more

What is ADHD? How does ADHD affect the brain? Why do only some people have it? How can we control our brains? An estimated 11 percent of U.S. kids are diagnosed with the neurological condition known as ADHD, so you may have it or have a friend or classmate with this unique way of ...  Show more

Why does blood not stick to human skin like a permanent marker, yet stains things like clothes really badly? How does circulation work after an amputation? How many blood types are there? What does A B & O mean? If blood in your veins looks blue, why do we never see blue blood wh ...  Show more

If you’ve ever smacked a mosquito on your arm, you might have seen a little smear of red blood on your skin afterward. But just whose blood was it? Do we have the same blood as insects? We asked biologist Claire Rusch from the University of Washington to help us find the answer. ...  Show more

Many people battling symptoms, conditions, or chronic illness are subjected to routine blood draws and tests. How can these routine blood draws affect the body? In this episode, I uncover important truths about blood draws and reveal why the blood testing and donation system is b ...  Show more

Knowing your blood group is handy information if you need a blood transfusion, or even an organ transplant. And it's essential information for the blood bank recruiting donors who match your blood type—and for people needing a blood product.