Almost half of the global population infected with HIV cannot afford treatment. To better understand this devastating disease, young scientists observe the life cycle of HIV.  Through animation, they see the cell infection,...

Protease inhibitors currently treat HIV and hepatitis C, but in the future, might also be used to treat some cancers. Viewers learn how HIV spreads in the body and then observe what happens after the introduction of a protease...

The first AIDS cases in the United States were reported in June of 1981. AIDS quickly became an epidemic soon and the lack of a treatment or cure caused fear in the entire population. Viewers observe a geographical representation of the...

AZT, developed in the 1960s to treat cancer, actually treats HIV as well. Viewers observe how AZT blocks the reverse transcriptase of HIV. Then they see what happens when the virus mutates to be immune to AZT.

At what point in the fertilization process do stem cells turn into an embryo? Viewers observe the development of an embryo from egg to fertilization to development into a fetus. The narrator stresses the role of cell division,...

Cell division, cell expansion, and cell growth all take place in the cytoplasm exclusively. Young biologists learn about the role of cytoplasmic factors in cell development through and animated video.

The sun heats Earth's surface unevenly, causing crazy weather patterns around the globe.  A NOVA video describes the resulting changes in air pressure, temperature, humidity and their impacts on weather. It connects the concepts to...

Approximately 2,000 thunderstorms happen simultaneously across the planet at any given time—that's a lot! Beginning with how clouds form, NOVA describes the conditions needed for storms to develop, and highlights the three factors that...

What happens to a species when members become separated by changes in their environment? Present young biologists with the ultimate example species—the anole lizard. A brief video describes the origins of the multitude of anole species...

How do the many parts of our brains form as we grow and develop? Peer inside a developing brain using a short video. Topics include stem cells, differentiation, and the unusual way these specialized neurons organize themselves throughout...

Take autism awareness in your class to a whole new level. Scholars watch a short video to discover how autism affects the brain. The narrator discusses the effects of altered proteins on neural synapses and the role the nucleus plays in...

What happens when intestinal epithelia receive the wrong directions during differentiation? Discover how tumors form in the intestinal lining using a narrated video. The resource shows both normal and cancerous growth using specially...

Is our skin color determined only by genetics? Explore skin science through a video and related interactive. Young biologists discover the cells of the epidermis, how melanin is made, and the factors that influence the outward appearance...

Termites in your house? Bad. Termites in your garden ... good? Discover the good side of an insect that often gets a bad rap with an interesting animation. The narrator discusses how termites break down plant material, what the soil...

Gorongosa National Park holds a fascinating and ever-changing landscape. What makes the water cycle in the park so special? Travel to Mozambique to learn more about the park using a short video. Content includes rainy season in the park,...

It's a question economists, anthropologists, and sociologists have asked themselves since the first regional lines were drawn in the sand. Are there common factors that destine one country to thrive and another to struggle? An...

Did you realize cells become restricted in the types of cells they produce as embryos develop? Stem cells might become anything, but late state cells can only become the specialized cell based on their locations. A captivating video does...

If Earth didn't have clouds, the global temperature would be at least 22 degrees Fahrenheit warmer. Viewers examine the importance of clouds on temperature, climate, and global warming. The video describes the current impact of clouds...

Scientists categorize clouds by both height and shape since both traits impact the weather independently. Viewers fly high to learn about the characteristics of each type of cloud. NOVA explains the composition of clouds, the atmospheric...

Why do big storms spin as they travel? As Earth spins, the movement of air and water change. Viewers observe the Coriolis effect on paper airplanes, water, and even hurricanes—and find the effect is everywhere!

Did you know animals hibernate all around the world, even in the deserts and tropical rain forests? How do these animals reach extreme body temperatures and undergo a decreased heart rate that would be deadly to non-hibernating animals?...

Biogeography is the study of the geographical distribution of plants and animals. NOVA's Evolution Lab explains how organisms on different continents can be so closely related. The resource discusses the processes that bring life from...

Have you been shaped by evolution? A short video introduces the idea of evolution through examples of natural selection, reproduction, traits, and more. The video exists as a small part of a series from the NOVA Evolution Lab.

Variable expressions can take many shapes and forms. Learners review the different components of many different variable expressions in a straightforward video lesson. After introducing vocabulary, the instructor uses context to write...