This music video teaches about food chains and the pyramid of energy. Watch it a few times and you'll be completely on top of trophic levels and energy transfer.
Learn more about global atmospheric circulation.
Try to use the electric field to help you score a goal.
Explore homeostasis with the Amoeba Sisters and learn how homeostasis relates to feedback in the human body. This video gives examples of negative feedback (temperature and blood glucose regulation) and positive feedback (events in childbirth).
Online article describing specifically how cell phones work.
When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable "trophic cascade" occurred. What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains in this movie remix.
An animation to explain how the climate system works.
How are mountains formed? Find out more about volcanism, erosion and colliding continents.
Learn about the basics of ice cores.
Paul Andersen explains the importance of biodiversity.
Interactive map of the world or local earthquake in real-time data.
A straightforward lesson on the law of conservation of mass, which states that matter is neither created nor destroyed in a chemical reaction.
A video explaining the law of conservation of mass.
Read about the life span of Monarch Buttlerflies.
Time lapse of several lima beans sprouting over a six day period, taking more than 1,600 photos.
A longitudinal or compression wave is created by a disturbance that is along the direction the wave will travel. A transverse wave is created by a disturbance that is perpendicular to the direction the wave will travel.
See what the Moon looks like at different phases.
U.S. dollar bills are printed with special inks that contain traces of iron and other magnetic material in an effort to prevent counterfeiting. So, the only logical question that follows is, "Can you get the iron out of a dollar bill?" Steve Spangler accepted the challenge with the help of his friend, Bob Becker, who found a most unusual way to extract the iron from a dollar bill. You'll be amazed at how much iron is in a single dollar bill.
A cartoon character describes the process of Photosynthesis. Created using Media Semantics Character Builder.
A song by Peter Weatherwall talking about photosynthesis.