Biology



A cockroach survives radiation better than a human, but it's not immune to the heat of an atomic bomb. (Amada44)
Cockroaches seem pretty indestructible, at least compared to us puny humans. They can live for a week without a head, survive a month without food, and appear unaffected inside an operating microwave oven. While it’s true the insects can survive harsh environments, can they really live through the detonation of […]

Can Cockroaches Survive a Nuclear Bomb?


Cats and other vertebrate animals yawn. Cats can even catch yawns from people.
People yawn from before they are born until old age. Other vertebrate animals do it too, including cats, dogs, fish, birds, and snakes. Science hasn’t completely nailed down an explanation for why we yawn, but we understand the factors that cause yawning and have theories about contagious yawns. How Yawning […]

Why Do We Yawn? Science Explains



The visual center of brains of blind people may be active and produce lights and colors.
One of the most common questions blind people get asked about their blindness is “What do you see?” Unless the blind person formerly had sight, there’s no frame of reference to describe the experience. A person blind from birth typically doesn’t see anything… not black, not gray, not white. It’s […]

What Do Blind People See?


Biology Word Search
Biology Word Search is a word search puzzle using glossary terms associated with middle school biology courses. These biology topics include words dealing with living systems, genetics, the cell, and the environment. The words can be found running left/right, up/down and diagonally within the array of letters. Word searches can […]

Biology Word Search – Science Word Searches


Animated DNA Molecule (brian0918)
It’s easy to extract DNA from human cheek cells. You don’t even need a lab. Here’s how to do this experiment in your kitchen. What Is DNA? DNA is deoxyribonucleic acid. It’s the genetic material in every cell in your body, except mature red blood cells, which have lost their […]

How To Extract DNA From Human Cheek Cells