Learn about DNA, what it is and how it "instructs" our bodies to do many cellular functions. Engaging illustrations help explain this biochemistry concept for young readers.

Presents a collection of essays with different viewpoints on embryonic stem cell research, with discussions on the possibility of these cells providing cures for disease, the ethical issues involved in obtaining the cells, and the role of government in funding the research.

In this video Bill Nye uses comedy to present information on DNA and creatures like the amoeba and paramecium. Bill Nye explains what cells are, how the human body grows, the job of the nucleus, and the number of cells in the average human body.

Presents an in depth look at all parts of a plant cell and how they function, including what the three types of tissue plant cells are made of: dermal, vascular, and ground.

Her name was Henrietta Lacks, but scientists know her as HeLa. She was a poor Southern tobacco farmer, yet her cells--taken without her knowledge--became one of the most important tools in medicine. The first "immortal" human cells grown in culture, they are still alive today, though she has been dead for more than sixty years. HeLa cells were vital for developing the polio vaccine; uncovered secrets of cancer and viruses; helped lead to in vitro...

With his unique blend of informative text and illustration, master explainer David Macaulay explores one of the body's most amazing organs. How does the eye collect and focus light? How does the brain interrupt signals from our eyes so we recognize the things around us? It's a remarkable process that we never have to think about--we just have to keep our eyes open!