Expose your class to the steps of the nitrogen cycle with this short clip. Colorful computer imagery and animation explain how nitrogen travels from the atmosphere as a gas into plants and soil, where bacteria convert it into nitrates....

Carbon is all around us, as shown in this cartoon animation. The carbon cycle is portrayed simply and accurately with fun cartoon plants and animals. Use this video in an elementary or junior high class to facilitate your learners'...

Can someone really have a "biological clock"? Discover why many organisms on earth have an inherent awareness of where they are in the day's cycle.This video discusses animal adaptations, the earth's revolutions, and how light and...

Plants evolved more than 400 million years ago into two types — vascular and nonvascular. Here's a video that explains the difference between vascular and nonvascular plants and then focuses on the over 24,000 types of nonvascular...

Water that leaves the oceans must eventually return. The animations in the final lesson of the four-part NASA series show the complex path water can take across landforms before returning to the ocean. Approximately one-third of the...

Two very hip teenagers walk through the forest collecting evergreen cones. One teaches the other about gymnosperms: cycads, ginkoes, gnetophytes, and conifers. He tries to convince his friend how amazing cones are, while she defends...

Time-lapse photography was used to capture the growth of different fungi. This may evoke "Eews!" and "Icks!" from your class. The fungal life cycle is briefly described and then the video stops short. The title is in error; fungi are not...

Sometimes the data to a complex problem is blooming right in front of you. An illustrative video explains how the change in poppy flowering patterns are linked to climate change. 

There is more to the water cycle than simply rain and evaporation! The first installment in a four-part series explores the solar heating of the ocean through three satellite animations. The animations offer different views of the earth...

How can you create and observe the water cycle in your own home? Learners discover how to create their own terrariums and observe the water cycle in a video that models the steps.

Dandelion and maple tree seeds are blown and thrown to show two methods of seed dispersal. The narrator videotapes from his vantage point, his hands visible, but never his face. He examines helicopter blades as a human imitation of...

The oceans contribute 37 trillion tons of water to land masses in the form of rain and snow. The third in a four-part series from NASA show satellite animations highlighting the precipitation on Earth. The videos show the movement of the...

Here's your chance to grow and develop your lesson plan for NGSS standard LS1B! The narrator of the video explains how to lay a solid foundation for learning within the standard, then gives examples and scenarios to help fine tune...

Seventy percent of the world's oxygen is produced through photosynthesis by phytoplankton, microscopic plants found in the ocean. Viewers learn about the complex process of photosynthesis with a video that covers both the light...

A scientific video describes photosynthesis in both plants and algae through the use of chloroplasts. It also explains the various pigments and types of chlorophyll, light reactions, and the Calvin cycle. 

Be careful when discussing mitosis, it's a divisive issue. The video explains the mitosis and cytokinesis portions of the cell cycle. It discusses the prophase, metaphase, anaphase, and telophase in detail.

What happens when you plant large numbers of non-native trees in an area? Well, sometimes it attracts the wrong kind of attention! Meet the South American palm weevil, an insect that spends its entire life cycle destroying palm...

Salman Khan delves further into the Calvin Cycle (light-independent reactions). This presentation presents the information at a college level.

Are you Excelent with spread sheets? Video begins with an explanation of populations and life cycles of both plants and animals. Then it walks through how to model generations of a population by using a spreadsheet. It is the...

This clip picks up right where the Khan Academy's Photosynthesis video left off. Chemicals such as hydrogen and compounds such as NADPH are reviewed along with details including the stroma, thylakoid, lumen, and grana. See the parts of a...

"Hahai no ka ua i ka ulula'au." In other words, "The rain follows after the forest," but is it actually true? The video discusses the development of the rain forests and their unique water cycle. It also offers advice on what...

When did biology become a proper science? Travel back in time to the evolution of natural history during part 19 in an ongoing History of Science series. Pupils discover early pioneers in the study of plants and animals, the birth of...

In an eternal summer, the plants flower often. They rely on the insects and animals shown to spread pollen and eat fruit, distributing seeds as they later defecate. This quick video clip serves as an introduction to seed dispersal by...

We know about many different life cycles of animals and plants, but did you know stars also have a life cycle? The video illustrates the life of a star in under one minute from the formation of helium to the collapse of the star.