History of a Cookie

Individuals analyze tree rings to determine the health of an ecosystem. They then look at otoliths of fish, hard calcium carbonate structures located behind the brain, in the same manner. 

How is sea coral like a thermometer? Part three of a six-part series from NOAA describes how oceanographers can use coral growth to estimate water temperature over time. Life science pupils manipulate data to determine the age of corals...

The total world population is predicted to pass 8 billion by 2025, which is less than 10 years from now. The video focuses on human population growth and the impact it has had and is having on our planet and other populations. It...

Medieval Chinese scientists were the masters of invention! Explore the wonders of the Far East through the eighth installment in a 15-part History of Science series. The resource covers contributions to science and technology by dynasty,...

What do Saturn's rings, electromagnetism, and the first color photograph all have in common? James Clerk Maxwell discovered them all! Learn about one of the founders of modern physics with a video biography of his academic...

Math and science come alive in this career-related instructional activity on sanitation. Along the way, learners explore bacterial growth rates using exponential notation and graphs. A link to a very brief, but vivid video shows just how...

In this online interactive activity, you will align tree ring cores to build a long chronology of climate history.

Waterton-Glacier International Peace Park includes whitebark pines that are over 1,200 years old, meaning they have been there since before medieval times. The second lesson of five details how to read tree rings for climate change and...

We'll talk with researcher studying a community of bacteria that has been isolated from the surface for millions of years. They describe some of the biochemical processes that have allowed the bacteria to survive below glacier ice, and...

Students examine how the environment influences tree growth. For this tree lesson, students analyze the growth of rings to see how plants adjust to adverse conditions in order to survive.