Trebuchet trials, magic paper, lift your parent? Explore the concept of levers, how they work, and how they’re used. STEM Challenge: build a “Paint Paddle Catapult” to demonstrate the concept and function of this type of lever. Episode 202.
Death Valley is one of the driest places in North America - but only about a 100 miles from a forest of Giant Sequoia trees. How can these two completely different ecosystems exist right next to each other?