Your Body

Nutrition

Nutrition

As my kids were growing up, I went through various cycles of nutrition nagging (“Drink your milk!”) and nutrition bribing (“I’ll trade you one cookie for four green beans.”) To those of you on the front line today, fighting the …[Continue]

Color Vision

Color Vision

Color vision is our brain’s response to light reacting with our eye’s cone cells. Humans have three types of cone cells, each reactive to a different color: red, green, or blue. But color perception is subjective, and different people see …[Continue]

Genetics

Genetics

Genetics is the study of inherited characteristics. It was pioneered by Charles Darwin (1809 – 1882), the father of evolutionary biology, and Gregor Mendel (1822 – 1884), whose experiments with inherited characteristics in peas are reproduced in classrooms to this …[Continue]

Pituitary Gland

Pituitary Gland

The pituitary gland is located at the base of your brain, and is an important part of the endocrine system that controls your hormones. Although just the size of a pea, it secretes nine hormones that control growth, blood pressure, …[Continue]

Human Heart

Human Heart

Your heart is located in the upper left-hand side of your chest and if you place your hand there, you can feel it beating. The heart continually pumps blood to all parts of the body, and never stops beating, even …[Continue]

Immune System

Immune System

Our immune systems protect us from disease in a variety of ways. First, they keep invading microbes and viruses out, but if that fails, the immune system will attack the invaders, and try to destroy them. The immune system is …[Continue]

Hearing Protection

Hearing Protection

Loud sounds, such as those at a concert or coming over headphones plugged into an MP3 player, can damage the inner ear and cause long-term hearing loss. Learn more about the science of sound, and how you can protect your …[Continue]

First Aid

First Aid

First aid is the initial care given to an injury, and in some cases can save lives. Today’s site picks are a roundup of sites that teach and review first aid practices, with a special emphasis on making the lessons …[Continue]