A few years ago, [Addie] over at Tymkrs put together a spooky little Halloween project: a small Propeller board that emulates the electrical signals in a heart. As a cardiac nurse, she thought her ...

but what should your heart rate look like at rest? For most adults, a resting heart rate range of 60 to 100 beats per minute (bpm) is typical: However, a number of factors—including physical ...

But who among those who have encountered bison in Yellowstone National Park or elsewhere knows what a bison heart looks like? Montana Wild pointed out that a typical bison heart weighs between 3.7 ...