How is a human body's temperature regulated?

The human body has an automatic thermostat that takes care of both our heating and cooling systems, keeping body temperature about 98.6° F.

What is special about the human brain?

Consisting of billions of neurons that connect with each other via trillions of synapses, just one human brain is far more complex and designed much better than all the computers in the world combined.

What is one amazing feature of a human ear?

The ear drum is able to detect vibrations smaller than a hydrogen atom.

What makes the human eye unique?

The human eye is situated backwards so we don't always have to look through a pool of blood.

What makes the human hand a work of wonder?

The human hand has a unique arrangement of bones, tendons, muscles, and nerves which allows it to move fast enough to type over sixty words per minute, and to grasp with both force and delicacy.

What is one amazing feature of the human heart?

It pumps blood through arteries under the skin, covering about twelve thousand miles per day, enough to wrap around Earth every two days.

What is irreducible complexity?

Sometimes referred to as "all or nothing," irreducible complexity is a system of interdependent parts: parts that rely upon each other in order to make the whole function.