What Is the Biggest Single-Celled Organism?

What did the windmill say about renewable energy? I'm a BIG fan! Lesson three in the series of 12 has classes discuss potential and kinetic energy and then, in pairs, they complete a web quest over the different types of energy...

Pregnant women exposed to PAH air pollution increase the risk of obesity in their children. The example of epigenetics, along with others, builds the basis for understanding the process of cell differentiation. Scholars view a video,...

Meet cyanobacteria, the single-celled organism that changed the world by causing the first mass extinction of life forms, gave rise to oxygen breathing life forms, and was responsible for the first Ice Age.

Jane Hirshfield's poem "My Skeleton" asks readers to pause and think about the amazing, often taken-for-granted structure that protects and gives form to human bodies. After observing the human skeleton's image, class members read the...

Launching a study of molecules? Check out a short video that explores rotation, translation, and vibration—the three ways molecules move.

Can plants communicate with each other? Sure. And if we examine the chemical signals they broadcast, we can tune into their language. Check out this introduction to plant communication.

Sharks are amazing! They can heat their own blood, they can sense even the faintest of electrical currents, and their sense of smell is is acute. Rather than wanting to eradicate this species, class members can educate others as a result...

Are funky-looking fruits and vegetables dangerous? Not if you carefully wash them. Find out why by checking out this short video that explains the science behind the cosmetic problems.

Why are there so many different skin colors? Check out the science and the anthropological theories used to explain the rich palette of human skin colors as presented in the short video.

Milk meets every single nutritional need for a baby in the first six months of life. Observe how an infant's small intestine breaks milk lactose down into a usable form of nutrition. With the help of an animation, viewers see the process...